Sass: CSS At-Rules
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CSS Variables - CSS vs Sass - variables inside media queries - YouTube
Define SASS variables within @media directives · Issue #1639 · sass/sass · GitHub
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bootstrap-sass + gulp: Media query expression must begin with '(' - Stack Overflow
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Easy and Clean Responsive Media Queries using SASS/SCSS | Tutorial - YouTube
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Using CSS Custom Properties with SASS/LESS variables. - developersink
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css - Media Query in SCSS is not working properly - Stack Overflow
css - Need to put in media query in one section of a page to get it to work in another? SCSS/SASS - Stack Overflow
Sass and Media Queries: What You Can and Can't Do | Design Shack
Writing Media Queries with Sass Mixins | by Timothy Robards | ITNEXT
Writing Media Queries with Sass Mixins | by Timothy Robards | ITNEXT
Media Queries, Sass 3.2, and CodeKit | CSS-Tricks - CSS-Tricks
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