![]() ![]() To do some simple math to calculate widths for an article and aside. Operators like +, -, *, math.div(), and %. Note that the CSS in %equal-heights isn’t generated, because %equal-heightsĭoing math in your CSS is very helpful. Sass, but using placeholders is the easiest way to make sure you aren’tĮxtending a class that’s nested elsewhere in your styles, which can result in You can extend most simple CSS selectors in addition to placeholder classes in Write multiple class names on HTML elements. Get the same CSS properties as %message-shared. The magic happens in the generated CSS, where each of these classes will warning to behave just like %message-shared. Sass would watch all files in the app/sass folder for changes, and compile CSSĬSS Output. In this example: sass -watch app/sass:public/stylesheets Output, and separating them with a colon. You can watch and output to directories by using folder paths as your input and ![]() Your input.scss file, you’d just add the watch flag to your command, like so: sass -watch input.scss output.css If you wanted to watch (instead of manually build) Watch flag tells Sass to watch your source files for changes, and re-compile CSSĮach time you save your Sass. Ive opted to use rem units for size consistent scaling across element types, but you could certainly use em units for variable indentation, or simply px. You can also watch individual files or directories with the -watch flag. Here Ive defined a CSS variable using a custom property so that the indent factor can be updated at just one place and calculated for each rule. Single Sass file, input.scss, and compile that file to output.css. ForĮxample, running sass input.scss output.css from your terminal would take a Need to tell Sass which file to build from, and where to output CSS to. Installed, you can compile your Sass to CSS using the sass command. The most direct way to make this happen is in your terminal. ![]() Save it as a normal CSS file that you can use in your website. Once you start tinkering with Sass, it will take your preprocessed Sass file and Goodies that help you write robust, maintainable CSS. That don’t exist in CSS yet like nesting, mixins, inheritance, and other nifty Preprocessing Preprocessing ĬSS on its own can be fun, but stylesheets are getting larger, more complex, and Go here if you want to learn how to get everything set up. If you want to just browse here, go ahead, but we recommend you go install Sass first. In addition to indenting HTML, many developers (me included) will do matching indentation in any corresponding CSS.Before you can use Sass, you need to set it up on your project. Of course, some developers might have a slightly different method of indenting in certain areas, but the idea is basically the same the intention is to make the code easier to read in a development environment. Notice that the and elements are indented, because they are both immediate children of the element. As you can see, when the content in the section starts to get larger, indenting makes things a bit easier to digest at a glance. This last chunk of code is taken from the HTML5 Please website. If (location.host = '') location.href = '///' HTML5 Please - Use the new and shiny responsibly However, with much more content in the section, nesting could make it easier to scan the contents: With simple HTML nesting, the content in the section is often neglected, but keeping the nesting consistent here, too, is good practice.įor example, the following sample code is fairly readable, even with no nesting: The principle here is that whenever something is nested, you indent, so that it’s clear where everything is in the markup’s hierarchy. I think most if not all of us add basic indentation in our HTML: Now that we’ve got that out of the way, how can we use white space in development code to ensure that our files are as readable and maintainable as possible? Well, we could consider a number of options, starting with some basics. Well-written, readable code doesn't create mind games and labyrinths when other developers read it. I don’t think anyone would argue that these suggestions aren’t best practices (even if we don’t implement them in every project). This means, Gzip’ing, concatenating and minifying as many assets as possible, thus serving the smallest possible files and the least number of files. The inline formatting context is part of the visual rendering of a web page. Right up front, I’ll offer some simple advice: In production, your code should be as performance-friendly as possible. This means concatenating and minifying as many assets as possible, thus serving the smallest possible files and the least number of files. He will offer some advice on how to make our code as performance-friendly as possible. In this article, Louis Lazaris will show us how to use white space in development code to ensure that our files are as readable and maintainable as possible.
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