高度な Sass への道、パート 1 (基本)_html/css_WEB-ITnose

1.body{background-color:red}.person,.son,.banner{height:100px}.son,.banner{height:100px}

1.// scss2.body {3.    /*$color: red;4. color: $color; 局部变量,下面访问不到, 所以编译会报错,如果想要下面能够访问到的话. 只需要后面加上!global就可以了*/5.    $color: red !global; /*这样就可以吧局部变量变为全局变量*/6.    color: $color;7.}8.9.footer {10.    color: $color;// 这里也不会报错11.}

1.// scss2.$fontSize: 12px;3.$fontSize: 16px;4..one {5.    font-size: $fontSize;6.}7.// 生成的css8.body { color: red; }9.footer { color: red; }10..one { font-size: 16px; }

1.// scss2.$fontSize: 12px;3.$fontSize: 16px !default;4..one {5.    font-size: $fontSize;6.}7.// 生成的css8.body { color: red; }9.footer { color: red; }10..one { font-size: 12px; }11.

1.// scss2.$color: red;3.$maps: (borderColor: red, backgroundColor: blue);4.$paddings: 10px 20px 30px 40px;5.$padding1: 3px 20px 30px 40px;6.body {7.    color: $color;  8.}9.10.footer {11.    color: $color;12.    padding: $paddings;13.    padding-left: nth($padding1,1);14.}15.16.// 生成的css17.18.body { color: red; }19.footer { color: red; padding: 10px 20px 30px 40px; padding-left: 3px; }

1.// scss2.$color: red;3.$paddings: 10px 20px 30px 40px;4.$padding1: 3px 20px 30px 40px;5.$maps: (borderColor: red, backgroundColor: blue);6.body {7.    color: $color;  8.}9.10.footer {11.    color: $color;12.    padding: $paddings;13.    padding-left: nth($padding1,1);14.    border-color: map-get($maps, borderColor);15.    background-color: map-get($maps, backgroundColor);16.}17.18.// 生成的css19.body { color: red; }20.footer { color: red; padding: 10px 20px 30px 40px; padding-left: 3px; border-color: red; background-color: blue; }

1.// scss2.$className: container; // 变量的特殊用法3.$bgc: background-color;4..#{$className} {5.    width: 100px;6.    height: 100px;7.    #{$bgc}: $color;8.}9.// 生成的css10..container { width: 100px; height: 100px; background-color: red; }

1.//scss2.$font-size: 19px;3..font-size {4.    font-size: $font_size;5.}6.// 生成的css7..font-size { font-size: 19px; }

1.// scss2.@import "css.css";3.@import "http://xxx";4.@import url(css.css);5.// 生成的css6.@import url(css.css);7.@import "http://xxx";8.@import url(css.css);

1.// 这里我新建了一个文件名称叫做_part1.scss2.3.// _part1.scss 文件的样式4.$fontFamily: '微软雅黑';5..body {6.    font-family: $fontFamily;7.}8.9.// 在demo1.scss中导入10.@import "part1"; // 这样直接写,就会导入_part1.scss中的样式,这是约定.11.12.13.// demo1文件生成了以下的css14./* line 2, ../sass/_part1.scss */15..body { font-family: "微软雅黑"; }

1.body {2.    a {3.        height: 100px;4.        &:hover {5.            background-color: green;6.        }7.        // 跳出常规样式,对应着下面的行号 88.        @at-root .container {9.            height: 100px;10.        }11.        @media(min-width: 768px) {12.            // 跳出media和常规样式13.            @at-root(without: media rule) {14.                .container { // 这里对应下面的行号1415.                    height: 100px;16.               }17.            }18.            // 下面的样式只跳出了media 没有跳出常规样式,如果需要跳出常规样式的话需要设置,rule19.            @at-root(without: media) {20.                .container { // 这里对应行号2021.                    width: 1000px;22.                }23.            }24.        }25.    }26.    @media(max-width: 1000px) {27.        // 默认是跳出 rule28.        @at-root .container{ // 对应行号2829.            height: 1000px;30.        }31.        // 下面这句跳出media32.        @at-root(without: media rule) {33.            .container { // 对应行号3334.                width: 500px;35.            }36.        }37.    }38.}39.40.41.// css42.@charset "UTF-8";43./* line 2, ../sass/demo2.scss */44.body a { height: 100px; }45./* line 4, ../sass/demo2.scss */46.body a:hover { background-color: green; }47./* line 8, ../sass/demo2.scss */48..container { height: 100px; }49./* line 14, ../sass/demo2.scss */50..container { height: 100px; }51./* line 20, ../sass/demo2.scss */52.body a .container { width: 1000px; }53.54.@media (max-width: 1000px) { /* line 28, ../sass/demo2.scss */55.  .container { height: 1000px; } }56./* line 33, ../sass/demo2.scss */57..container { width: 500px; }

1.// scss2. @at-root .container {3.     color: red;4.     @at-root nav & {5.         color: blue; 6.     }7. }8.9.// out css10..container { color: red; }11.nav .container { color: blue; }

1.//scss2..alert {3.    height: 30px;4.}5..alert-info {6.    @extend .alert;7.    color: #D9EDF7;8.}9.// out css10..alert, .alert-info { height: 30px; }11..alert-info { color: #D9EDF7; }

1.// scss2..alert {3.    height: 30px;4.}5..bgc {6.    background-color: #f5f5f5;7.}8..alert-info {9.    @extend .alert, .bgc;10.    color: #D9EDF7;11.}12.13.// out css14..alert, .alert-info { height: 30px; }15..bgc, .alert-info { background-color: #f5f5f5; }16..alert-info { color: #D9EDF7; }

1.// scss2..one {3.    border: 1px solid red;4.}5..two {6.    @extend .one;7.    color: red;8.}9..three {10.    @extend .two;11.    background-color: #f5f5f5;12.}13.14.// out css15..one, .two, .three { border: 1px solid red; }16..two, .three { color: red; }17..three { background-color: #f5f5f5; }

1.a span{2.    height: 100px;3.}4.div .container {5.    @extend a, span; 6.}7.a span, div .container span, a div .container, div a .container, div .container .container { height: 100px; }

1.// scss 这样写将会出错 ,2.// .three1 {width: 100px;} // 将media写在这里将会出错3.@media screen and (min-width:320px) and (max-width:639px){4.    .three1 {width: 100px;} // 写在这里下面的才可以继承5.    .container {6.        @extend .three1;7.        height: 100px;8.    }  9.}

1.// scss2.%message {height: 30px;}3..message-danger {4.    @extend %message;5.    color: red;6.    font-size: 18px;7.    height: 30px;8.}9.10.// out css11..message-danger { height: 30px; }12..message-danger { color: red; font-size: 18px; height: 30px; }