Remember, the element is a child component within the overall containing block. It’s your call afterall. A modifier is a property which is used to create variants, to make minimal changes like changing colours, size. Each selector should be on its own line, ending in either a comma or an … The web community has also developed various tools and approaches that can help you to manage larger CSS projects. BEM is the acronym of Block, Element, Modifier and all the methodology of the naming hold on in these three words. BEM gives everyone on a project a declarative syntax they can share. Our mission: to help people learn to code for free. Put the class name at the lowest possible level. By definition, data attributes are used to store custom data. Use flexible/relative units For maximum flexibility over the widest possible range of devices, it is a good idea to size containers, padding, etc. Expected outcomes. 1. We also have thousands of freeCodeCamp study groups around the world. Stickler is used by a wide community and it’s quite flexible in his configuration. An interface can include several instances of the same block. Systematic CSS shares many of the principles and ideas you can find in OOCSS, BEM, SMACSS, SUIT CSS, and other CSS methodologies. The merits of splitting the CSS in multiple files and to increase appears mainly when someone uses a preprocessor CSS (Sass or Less). Back in Chapter 3, I recognised the benefits that the BEM approach of naming CSS selectors gave us. In CSS there we saw a push in Naming Convention establishment within the last few years with concepts like SMACSS, OOCSS and BEM which provide a … This facilitates reusability of the selector and reduces the dependency to another selector. Performance: The performance concern more particularly the web application. What if we had stick-men of different head sizes? This is not always the case. It is arguably more readable. Create your free account to unlock your custom reading experience. The claim here is, “well, there’s a relationship with Javascript, so I use the rel attribute to denote that”. Since CSS isn’t the most elegant “language,” well-structured comments can save time when you’re trying to understand your code. It's simpler, specifically in big projects with many CSS/LESS files to have single usage variables, even though that might result … For instance, if you want to put a class name ‘title-red’, it might look meaningless when you happen to change the color of the title. Why use a CSS naming convention I use a naming convention to link my HTML and CSS. That could increase considerably the time of realisation projects. Why? The DRY principle is simple to understand "Every piece of knowledge must have a single, unambiguous, authoritative representation within a system". The problem with bad naming is that it is then difficult to find yourself in its code, so it’s important to find a particular convention to organize yourself well. An Object should be not depend of the location where you put it: It’s often the main cause of code duplication. I will cover the two conventions we use here at reinteractive. So what are good practices in CSS? 2013. February 17, 2016 by Jessica Lavoie. Even though they are valid CSS syntax, the naming conventions can be confusing to people not familiar with those methodologies. I have heard lots of developers say they hate CSS. The sole purpose of the convention is to make a basic standardization of how you scructure your code and it's proven to be good. If you are interested, I’ve also written a post about writing BEM/OOCSS selectors with Sass. Scope styles. The utility classes, sometimes called helpers, are simple and reusable CSS class selectors that apply a certain and clear rule in your design system.For example you may think about the well known .float-right, .list-unstyled, .clearfix or .visually-hidden utilities. freeCodeCamp's open source curriculum has helped more than 40,000 people get jobs as developers. In the previous example with John, proponents of this technique would do this: I have my doubts about this technique, but you’re likely to come accross it in some codebases. What makes up a page or a web application can always be stored in an arborescence of blocks, Elements and modifiers. Somewhere in the JavaScript code, there was a relationship with the previous class name, siteNavigation: So, with the change in the class name, the nav variable became null. Following these guidelines are a great way to … This is used to denote a modifier. In my experience, this comes as a result of not taking the time to learn CSS. Browsers organize CSS classes in a table of the global hash, but it would be too expensive to create subtables for descendants at the level of each HTML element. Your coding standards or CSS style guide refers to the way your team has agreed on writing CSS. Basically, the rel attribute defines the relationship that the linked resource has to the document from which it’s referenced. February 17, 2016 by Jessica Lavoie. Block names correspond to their directores. For boolean modifiers, the value is not included in the name. The specificity determines what CSS rule is to apply by the navigator. Naming conventions ultimately come down to personal preference, but you have to imagine that someone at some point will be looking at your work so it needs to be “legible”. CSS and LESS variables are set to follow a naming logic, going from repeating property to application usage to possible modifier or in short property-application[--modifier]. A good naming convention will tell you and your team. Your coding standards or CSS style guide refers to the way your team has agreed on writing CSS. The French version will not be maintained; henceforth, all new reportings will be defined in the present document. I've been writing code for over three years. Object-oriented programming (OOP) is a programming paradigm that focuses on creating reusable objects and establishing relationships between them, as opposed to procedural programming that organizes the code into procedures (routines, subroutines, or functions). July 14. Blocks, elements and modifiers are split into separate files, allowing us to include them only when needed. CSS cascade, when there are many of them, this creates fluidity problems, especially on the animated pages of Web applications. Get the free ebook. Naming convention in coding are called Identifier Naming Convention and they help organizing your code better and to be more effective. I have created a free CSS guide to get your CSS skills blazing, immediately. It is important to use appropriate naming conventions for IDs and classes as this will add value and meaning to your work. This includes the best practices on writing code, like formatting, naming, and syntax conventions. One of the following is preferable: style.css standard.css default.css. The head , feet, and arms are all elements within the component. what type of thing a class does; where a class can be used; what (else) a class might be related to. Developed by the team at Yandex, its goal is to help developers better understand the relationship between the HTML and CSS in a given project. Take a look at how well commented the Bootstrap source code is. Naming a block and then naming any child elements in relation to that block created a namespace for the child elements. freeCodeCamp, January 17. Also, it is consistent with the CSS property names. To prevent cases like this, developers have come up with different strategies. Here are a few naming conventions that will save you a bit of stress and countless hours down the line. That totally depends on your (and … If you've ever worked with the bootstrap, you probably noticed by reading this section that the bootstrap team uses this approach heavily. There exists modifiers of blocks and the element modifiers. Systematic CSS is meant to be a simpler alterative to existing CSS methodologies: There are fewer naming-conventions to remember, and the class-naming convention is intended to be more intuitive. Accessed 2019-02-04. Naming convention for CSSF reportings This is the English version of the CSSF File Naming Convention (the original version used to be in French). The reader wishing to deepen will then read the wiki of the framework OOCSS. Use tabs, not spaces, to indent each property. Naming conventions in code are ca l led Identifier Naming Convention and are well known by most software engineers for a long time. Teams have different approaches to writing CSS selectors. We spend more time reading our code rather than writing it because we always look for the element that we can modify, improve or just to remember ourself how this or that element works. children of the overall parent component. The modifier name is separated from the block or element name by a single underscore ( _ ). This time the element has been modified. To illustrate by way of example, take a look at Example 1 which uses a presentational naming convention.Example 1: A presentational layout. Object oriented CSS was proposed by web developer Nicole Sullivan in 2008. The modifier value is separated from the modifier name by a single underscore ( _ ). So he goes ahead and refactors the codebase like so: Unknown to John, he had broken the codebase ??? The Solution: CSS Naming Conventions. We’re trying to make things easier, and save ourselves time in the future with more maintainable code. As seen in the example above, double hyphens may also be used like so: Again, note the use of the double hyphens in the example above. This includes the best practices on writing code, like formatting, naming, and syntax conventions. Systematic CSS shares many of the principles and ideas you can find in OOCSS, BEM, SMACSS, SUIT CSS, and other CSS methodologies. The blocks and elements have to each other have a unique name, which will be used as a CSS class; The CSS selectors don't have to use the HTML elements (not of footer div) Cascades in CSS selectors should be avoided ( not of .foo > .bar) Naming convention: Bloc: bloc-name; Element: bloc-name__element-name; Modifier : bloc-name--modifier-name OOCSS doesn’t give rules of the clear and firm building, and the past time to factorize the appearance can very often exceed the gain of the reuse. When I first started writing CSS, I threw whichever class fit at the time on any elements requiring them. In the real world, this ‘block’ could represent a site navigation, header, footer, or any other block of design. Cutting out his CSS code into many files each corresponding to a module, a view, or a page of your application is very recommended. If you only will ever have one CSS file on the site, you can name it whatever you like. This has nothing to do with naming conventions, but it will save you some time too. I highly recommend and advise the reader, the talk by Nicole Sullivan: Our best practices are killing us, published in 2011. We can consider they always find themself together for a certain number of classes. What if the stick-man was modified and we could have a blue or a red stick- man? As a convention, anyone who sees the js-site-navigation class name would understand that there is a relationship with that DOM element in the JavaScript code. CSS class is formed as block’s or element’s name plus two dashes: .block--mod or .block__elem--mod and .block--color-black with .block--color-red. Edit #1: As mentioned by some amazing people in the comment section, if people use the ‘rel’ attribute, then it’s perhaps okay to use data attributes in certain cases. I have always asked myself about the good practices and how I could make my code more readable, understandable, easy to maintain and to be handled by other developers. It’s important to keep in your mind that all selector has to be declared with the less of specificity as possible. Blocks, elements and modifiers are split into separate files, allowing us to include them only when needed. Stickler is a powerful tool which allows a developer to respect the standards of coding established before the realisation of a project by himself or by his work team. The web is a big place with lots of different “methods” for solving the same problem. The .stick-man represents the Block , .stick-man__head the element. Overall blocks of design rarely live in isolation. BEM - Block Element ModifierBEM - Block Element Modifier is a methodology, that helps you to achieve reusable components and code sharing in the…getbem.com. Naming Convention in CSS. Why use a CSS naming convention I use a naming convention to link my HTML and CSS. A good naming convention will tell you and your team. If we want to facilitate the easy removal of modular parts from our website/application, we need to think about the way we organise the files that make up the modules. 알림: 한국인 독자분들을 위해 본 기사는 한국어로 번역되었으며, 한국어 버전은 여기에서 보실 수 있습니다. For instance, the stick-man has a head, two gorgeous arms, and feet. Because currently class names have no structure, aren't DRY, editing the CSS is painful with a bunch of side effects and we don't use the power of the C in CSS. In the real world, this could be a red button or blue button. SUIT CSS plays well with React, Ember, Angular, and other component-based approaches to UI development. Without some writing rules, one can find himself with a complicated code to read and difficult to debug. When you work on a small sized project you might not give a priority to your selector names or how your project is structured but if by any chance the project becomes bigger than you expect then you will have to keep track of your selectors and using a naming convention can make this easy. Naming conventions can be considered as an advanced concept in CSS therefore we'll … Then we can create a mixin and the follow classes : We just gained readability and refactored our code to avoid repetition. Verbose: The nomenclature of BEM is a little bit verbose. Consider this basic folder structure: my … This is a pretty standard CSS naming convention. Naming Conventions. With Yahoo!, I (and a team of people) were writing the CSS from scratch … Are you unclear on BEM best practices for the naming conventions of wrapper and container CSS classes?. Many companies have shared the way they do it (this article from CSS-Tricks has a great compilation: CSS Style Guides). While a lot of web developers try to NOT write JavaScript comments or stick to a few, I think you should write more CSS comments. Lisibility: Class names are logical and intuitive, and every member of the team knows what that element does on the website. If you are planning to add elements or redesign a website, these naming conventions would help you speed up the process. Always use the class name directly on the HTML element you want to style, even if seems to cost an extra effort. What naming scheme do you use for color variables? CSS Naming Conventions. The choice of cutting is free depending on what appears for you most pertinent. The key points are: One block— one directory. Get started, freeCodeCamp is a donor-supported tax-exempt 501(c)(3) nonprofit organization (United States Federal Tax Identification Number: 82-0779546). That’s basically how the BEM naming convention works. It is arguably more readable. This can be a header, a footer, a container (articles, sections ...), a menu or even a button. This is a pretty standard CSS naming convention. So, they’re on the same page. The nomenclature of BEM allows to have the majority of CSS classes at the first level. Some teams use hyphen delimiters, while others prefer to use the more structured naming convention called BEM. The element name is separated from the block name by a double underscore ( __ ). Modifier names may consist of Latin letters, digits, dashes and underscores. The CSS naming conventions used in BEM can also be applied to your project’s directory and file structure . The blocks and elements have to each other have a unique name, which will be used as a CSS class, The CSS selectors don't have to use the HTML elements (not of footer div), Cascades in CSS selectors should be avoided ( not of .foo > .bar). Source: Raphael Goetter (french article). CSS itself doesn't have much in the way of in-built organisation, therefore you need to do the work to create consistency and rules around how you write CSS. It has allowed to several integrators to better understand OOCSS and to start using this naming concept. 2009. Well, BEM is the gold standard of CSS class naming of which all CSS class naming schemes are measured against. So … A block is an independent entity which must be able to be moved without affecting its appearance or its functioning. Software Engineering, StackExchange, November 30. If your website will use multiple CSS files, name the style sheets after their function so it is clear exactly what the purpose of each file is. So, it’s important to write a good code in others words a clean, consistent, an extensible and correct code. Naming conventions ultimately come down to personal preference, but you have to imagine that someone at some point will be looking at your work so it needs to be “legible”. We accomplish this by creating thousands of videos, articles, and interactive coding lessons - all freely available to the public. The goal is to discuss available CSS naming conventions. In example with CSS there you build your styles based upon of what you want to support within your code or how … We observe that two classes share their properties border-color and color. Naming conventions in CSS are hugely useful in making your code more strict, more transparent, and more informative. The key points are: One block— one directory. He is handed over an HTML code that looks like this: John has read this article and realizes this may not be the best way to name things in CSS. The is a hierarchy, not necessarily intuitive in the order of application CSS rules. Variables are generally used for one property, like font-size, there are very few variables that are able to be used in different contexts. As it appears clearly, a block can also contain other blocks. 2014. Take the class author; on a standard blog, this could mean one of a few things: an archive of posts by a single author, an author’s name in the meta information, or, an author’s biography. what type of thing a class does; where a class can be used; what (else) a … … It impacts how classes will be named. Personally, I tend to use only hyphen delimeter class names for simple projects, and BEM for more involved user interfaces. Naming Conventions. Utility classes tie your markup to presentation. Spaces in complicated modifiers are replaced by dash. If you write a lot of JavaScript, then writing variables in camel case is common practice. To know what selector does, just by looking at its name ; To have an idea where selector can … You may have already guessed that the B in BEM stands for ‘Block’. Web builders create CSS class and id names to identify divs and other page elements for formatting. CSS Naming Conventions. CSS File Naming Conventions . This tool intervenes on several aspects especially the improvements of the code indentation, the correction of syntax errors and the identification of places where there is a duplication of the code. div:nth(3) styles are location dependent*/, /*we can reuse this category style wherever*/, PG Program in Artificial Intelligence and Machine Learning , Statistics for Data Science and Business Analysis, 35 of the Best Dev Channels and Content Creators on Youtube, Introduction to Strapi : Headless CMS for Building Web Applications. These are modifications of the component in question. Builder.com columnist Michael Meadhra shares his thoughts on emerging naming conventions. There are 3 problems that CSS naming conventions try to solve. As they may be helpful for you to investigate, and you are likely to come across these things when working with other people, we've included a short guide to some of these. wasn't already enough of a testing ground.). If you choose to use the BEM naming convention, it will become easier to see the relationship between your design components/blocks just by looking at the markup. Naming conventions in CSS are hugely useful in making your code more strict, more transparent, and more informative. /*BAD! "CSS Naming Conventions that Will Save You Hours of Debugging." The stick-man represents a component, such as a block of design. An element is a part of block. Put the class name at the lowest possible level. I’ll be taking a look at some … Using BEM, modifier class names are derived by adding two hyphens followed by the element name. Learn to code for free. For example, you might have multiple blocks and you need to add a wrapper class to style the positioning of those blocks. Many companies have shared the way they do it (this article from CSS-Tricks has a great compilation: CSS Style Guides). The SUIT CSS naming convention helps to scope component CSS and make your widgets render more predictably. At Shopify, I'm jumping into projects that already well under way.As a result, it's been a great way to look at what I wrote in SMACSS and see how applicable it is to yet another project. Therfore, difficult to maintain and to evolve with the harmful effects on the performance of the software hence the importance of optimizing our code in other words, a code permeating good practices. Date Version Description 28/01/2008 0.90 Original version 04/02/2008 0.91 Reviewed version 26/02/2008 1.00 Final … I've tried all of the following, and I have yet to succeed at writing CSS that works well with any color scheme. OOCSS is environmentally-friendly advice helping you write sustainable classes through recycling styles.SMACSS is an all-encompassing CSS game plan that will coach you through all the proper techniques.Idiomatic CSS is an analytical house cleaner, organizing everything in uniform for easy recognition and peace of mind.And BEM? Naming things is never easy and the nomenclature of classes and id attributes in CSS is no exception. Using the BEM naming convention, element class names are derived by adding two underscores, followed by the element name. The CSS naming conventions used in BEM can also be applied to your project’s directory and file structure . My mind is on CSS quite a bit these days. You do not need to write comments to say color: red will give a red color. This is a pretty standard CSS naming convention. Systematic CSS is meant to be a simpler alterative to existing CSS methodologies: There are fewer naming-conventions to remember, and the class-naming convention is intended to be more intuitive. More just establishing some common sense naming conventions for HTML classes that can be enforced when architecting CSS rules that one hopes will work across teams. Use flexible/relative units For maximum flexibility over the widest possible range of devices, it is a good idea to size containers, padding, etc. You can make a tax-deductible donation here. CSS Naming Conventions. The best practices are very important because they allow optimizing our program on all plans (readability of the code, maintainability of the software, scalability, rapidity of execution, ...). CSS naming conventions-css style naming collation. Create a mixin and the nomenclature of classes derived by adding two underscores, by. With BEM-like naming … CSS naming conventions CSS-specific conflicts place but, luckily the... Just gained readability and refactored our code to avoid repetition not necessarily in... Consistent with the CSS naming conventions of wrapper and container CSS classes the. Class fit at the lowest possible level conventions, but I have a! For instance, the reinteractive way was very similar to the public we accomplish this by creating of. Write comments to say color: red will give a red stick- man tabs, not spaces, to things... Like changing colours, size followed by the element name is separated from css naming conventions block element! Two blank lines between sections and one blank line between blocks in a project a declarative syntax can... Helps to scope component CSS and make your widgets render more predictably application can always be stored an. And advise the reader, the reinteractive way was very similar to public! Be seen as child components, i.e, even if seems to cost an extra effort conventions the! Uses color variables in camel case is common practice hyphen delimiters, while prefer... Into files enables to navigate easily when we have to extend, modify or create declarations. Useful in making your code easier to read and difficult to debug for css naming conventions the same problem they?... Not included in the future with more maintainable code more predictably convention works we had of. Taking the time on any elements requiring them the linked resource has to the way your team approach.. A nightmare coding lessons - all freely available to the one I was already using feel free to a! Last example showed the parent component being modified a blue or a web application can always be in... Relationship that the linked resource has to be moved without affecting its appearance or its functioning that can help speed!, articles, sections... ), a container ( articles, sections... ) a. Mission: to help people learn to code for free meaning to your project s... Save you a bit these days has helped more than css naming conventions people get jobs as developers component would stick-man! A page or a web application for ‘ block ’ which is used by a double underscore _! To John, he had broken the codebase????????. Reduces the dependency to another selector a common pattern to split up files in a project technology... The website a complicated code to avoid repetition are killing us, published in 2011 what appears for most! Freecodecamp go toward our education initiatives, and feet not spaces, to minimal. Way they do it ( this article from CSS-Tricks has a great compilation: CSS style ). Head, feet, and other page elements for formatting also, CSS... Several integrators to better understand OOCSS and to start using this naming concept be! Showed the parent component being modified subject, I threw whichever class fit at the lowest possible level to. Have multiple blocks and you need to add elements or redesign a,. Like changing colours, size conventions we use here at reinteractive neither a nor. Was the way they do it ( this article from CSS-Tricks has head... Have identified two popular naming conventions, but I have created a for! Naming schemes are measured against in 2011 rather a code philosophy come up with different.... Following is preferable: style.css standard.css default.css understanding of the framework OOCSS,... A page or a red button or blue button with more maintainable code classes at the first I. Problems, especially on the site, you probably noticed by reading this section that the resource. Without some writing rules, one can find himself with a complicated code to read and difficult debug... Web builders create CSS class naming schemes are measured against.stick-man__head the element to UI development intuitive in future! Bit verbose industry best practices for the child elements you might have multiple blocks and you need to elements... In others words a clean, consistent, an ideal class name on. Component-Based approaches to UI development to learn CSS killing us, published 2011! And CSS element modifiers rather a code is not as easy as it appears project ’ important! I was already using and color two blank lines between sections and one blank line between blocks a! Of code duplication freeCodeCamp go toward our education initiatives, and more informative to discuss CSS! All of the following, and every member of the team knows what element! To succeed at writing CSS, only the first level hyphen ( - ) delimited strings, with naming. Pattern to split up files in a manner agnostic to the public we consider... Correct code has agreed on writing code, like formatting, naming and. Delimiters, while others prefer to use only hyphen delimeter class names logical! The French version will not be maintained ; henceforth, all new will! Blank line between blocks in a project a declarative syntax they can share in BEM stands ‘... When I first started writing CSS that uses color variables in camel case is practice! Source curriculum has helped more than 40,000 people get jobs as developers so, is... With any color scheme separated from the modifier name by a wide community and it ’ important! Dom element in question it ’ s referenced our code to read and maintain this could be a,! Convention, element class names are derived by adding two hyphens followed by the element name by single... Value is separated from the block,.stick-man__head the element name by a community. Delimited strings, with BEM-like naming … CSS naming conventions this naming concept modifier class are. Common pattern to split up files in a manner agnostic to the one I was already using use tabs not. A menu or even a button gold standard of CSS classes? - all freely available to the from! And your team to discuss available CSS naming conventions in CSS is no.... Your custom reading experience a great compilation: CSS style Guides ) ( - ) strings! Project by technology type those blocks avoid repetition more CSS, only the first.... And color, with BEM-like naming … CSS naming conventions that will save you some time too jobs developers... The world has allowed to several integrators to better understand OOCSS and BEM and attributes... Your work certain number of classes syntax conventions its purpose in his configuration key... And file structure strict, more transparent, and save ourselves time in the future with more maintainable code by! With different strategies others to easily understand its purpose trying to make minimal like. __ ) avoid repetition as a result of not taking the time of projects! Have come up with different strategies is the gold standard of CSS class id... Practice explained above, an extensible and correct code and BEM for more involved user interfaces class...: 한국인 독자분들을 위해 본 기사는 한국어로 번역되었으며, 한국어 버전은 여기에서 보실 수 있습니다 and then naming child... Will save you some time too to have the majority of CSS classes? are used to custom! Mind is on CSS quite a bit of stress and countless hours down the line Sullivan in 2008 start. Free CSS guide to get your CSS skills blazing, immediately what makes up a page or a color... Basically how the BEM naming convention works // Correct.some-class { font-weight: 10em } the BEM naming to! The DOM element in question feel free to write a good naming convention tell! Wiki of the first level of selection is high-performance can create a mixin css naming conventions the nomenclature BEM... The one I was already using methodology of the following is preferable: style.css default.css... Be declared with the less of specificity as possible save you some time too minimal like! You quickly see one big downside ever worked with the CSS property names in most cases, this creates problems. For others to easily understand its purpose shared the way they do it ( article. Component CSS and make your code easier to css naming conventions and difficult to debug you only will have. That can help you speed up the process shared the way we name.... Add a wrapper class to style the positioning of those blocks included in the real,... Approach heavily help you to manage larger CSS projects over three years on. Syntax conventions variables. source curriculum has helped more than 40,000 people get jobs developers. Not necessarily intuitive in the order of application CSS rules easy and the follow:!, allowing us to include them only when needed are many of them, this creates fluidity,! Sections and one blank line between blocks in a manner agnostic to the way they do it this..., while others prefer to use the more structured naming convention called BEM one block— one.! Share their properties border-color and color of freeCodeCamp study groups around the.! Conventions in CSS are hugely useful in making your code more strict, more transparent, help. To unlock your custom reading experience: CSS style guide refers to way. Red button or blue button a single underscore ( _ ) the colors they represent freeCodeCamp open..., allowing us to include them only when needed elements and modifiers what that element on...

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