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NESTED MEDIA QUERIESOur stylesheet contains a responsive breakpoint with some alterations to.factory. Let's clean up the media query a bit by nesting ... 阅读全文
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ARITHMETIC ITo ensure consistent spacing between columns, our stylesheet has a reusable$guttervariable. Subtract the width values in.factoryand.highri... 阅读全文
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FUNCTIONSWe need to find the height of video containers given a width and a 16:9 aspect ratio. To avoid doing the math manually each time, create a fu... 阅读全文
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The link:https://www.firebase.com/docs/android/quickstart.html 阅读全文
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1.Installing Firebase 2.Accessing DataYou'll need areferenceto access data inside your Firebase.A core concept of Firebase is thatevery pie... 阅读全文
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MOBILE WEB DEMOSet thebodyfont-sizeusing relative sizing so that 1em = 10px. Remember, the default font-size for a browser is 16px.body {font-size: 62... 阅读全文
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Better use @extend with % placeholder.Extend is useful when you want to reuse some of you class. Always use % placeholder.EXTEND IIt looks like.bluepr... 阅读全文
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When to use MIXIN?Better way to use MIXIN is when you deal with browser prefiex, for example:@mixin transition($val...){ -webkit-transition: $val; ... 阅读全文