SASS 语法和 SCSS 语法

 1$primary-color: #3498db
 2$secondary-color: #2ecc71
 3
 4body
 5    font-family: Arial, sans-serif
 6    color: $primary-color
 7
 8h1
 9    font-size: 2rem
10    color: $secondary-color
11
12    &:hover
13        text-decoration: underline

 1$primary-color: #3498db;
 2$secondary-color: #2ecc71;
 3
 4body {
 5    font-family: Arial, sans-serif;
 6    color: $primary-color;
 7}
 8
 9h1 {
10    font-size: 2rem;
11    color: $secondary-color;
12
13    &:hover {
14        text-decoration: underline;
15    }
16}

1$font-stack: Helvetica, sans-serif;
2$primary-color: #333;
3
4body {
5    font: 100% $font-stack;
6    color: $primary-color;
7}

1@mixin border-radius($radius) {
2    -webkit-border-radius: $radius;
3    -moz-border-radius: $radius;
4    border-radius: $radius;
5}
6
7button {
8    @include border-radius(10px);
9}

 1nav {
 2    ul {
 3        margin: 0;
 4        padding: 0;
 5        list-style: none;
 6    }
 7
 8    li { display: inline-block; }
 9    a { text-decoration: none; }
10}

 1%button-style {
 2    display: inline-block;
 3    padding: 10px 20px;
 4    font-size: 16px;
 5}
 6
 7.btn-primary {
 8    @extend %button-style;
 9    background-color: blue;
10    color: white;
11}
12
13.btn-secondary {
14    @extend %button-style;
15    background-color: gray;
16    color: black;
17}