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Description
Guards are used to match simple values or a number of arguments on expressions. It is applied to the CSS selectors. It is syntax for declaring mixin and calling it immediately. To successfully bring out the if type statement; join this with feature &, which allows you to group multiple guards.
Example
The following example demonstrates the use of css guard in the LESS file −
css_guard.htm
<!doctype html>
<head>
<link rel = "stylesheet" href = "style.css" type = "text/css" />
</head>
<body>
<div class = "cont">
<h2>Welcome to TutorialsPoint</h2>
</div>
<div class = "style">
<h3>The largest Tutorials Library on the web.</h3>
</div>
</body>
</html>
Next, create the style.less file.
style.less
@usedScope: global;
.mixin() {
@usedScope: mixin;
.cont when (@usedScope = global) {
background-color: red;
color: black;
}
.style when (@usedScope = mixin) {
background-color: blue;
color: white;
}
@usedScope: mixin;
}
.mixin();
You can compile the style.less file to style.css by using the following command −
lessc style.less style.css
Execute the above command; it will create the style.css file automatically with the following code −
style.css
.style {
background-color: blue;
color: white;
}
Output
Follow these steps to see how the above code works −
-
Save the above html code in the css_guard.htm file.
-
Open this HTML file in a browser, the following output will get displayed.
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