10. SCSS

SCSS의 기본 사용법에 대해서 알아본다.

vite + react + typescript + swc + scss 설치

npm create vite@latest my-app -- --template react-swc-ts

npm install -D sass

기본 사용법

1. css file 의 확장자를 .scss 로 변경

2. link 역시 변경

<link rel="stylesheet" href="./index.scss" />

3. Nesting

ul {
  list-style-type: none;
  padding: 0;
  display: flex;
  gap: 10px;
  padding: 10px;

  li {
    background-color: tomato;
    color: white;
    padding: 10px;
    border-radius: 7px;

    a {
      text-decoration: none;
      color: white;
      text-transform: uppercase;
    }

    &:hover {
      opacity: 0.8;

      a {
        color: gray;
      }
    }
  }
}

4. mixin

@mixin alert($bgColor) {
  background-color: $bgColor;
  margin: 10px;
  padding: 10px 20px;
  border-radius: 10px;
  border: 1px dashed black;
}

.success {
  @include alert(green);
}

.warning {
  @include alert(tomato);
}

.error {
  @include alert(yellow);
}

5. mixin with content

@mixin alert($bgColor, $borderColor) {
  background-color: $bgColor;
  margin: 10px;
  padding: 10px 20px;
  border-radius: 10px;
  border: 1px dashed $borderColor;
  @content;
}

.success {
  @include alert(green, blue) {
    font-size: 12px;
  }
}

.warning {
  @include alert(tomato, white) {
    font-size: 10px;
    text-decoration: underline;
  }
}

.error {
  @include alert(yellow, black) {
    font-size: 15px;
    text-transform: uppercase;
  }
}

6. mixin with midea query

* {
  box-sizing: border-box;
  padding: 0;
  margin: 0;
}

$breakpoint-sm: 480px;
$breakpoint-md: 768px;
$breakpoint-lg: 1024px;
$breakpoint-xl: 1200px;

@mixin smallDevice {
  @media screen and (min-width: $breakpoint-sm) {
    @content;
  }
}

@mixin mediumDevice {
  @media screen and (min-width: $breakpoint-md) {
    @content;
  }
}

@mixin largeDevice {
  @media screen and (min-width: $breakpoint-lg) {
    @content;
  }
}

@mixin xlargeDevice {
  @media screen and (min-width: $breakpoint-xl) {
    @content;
  }
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
    Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;

  @include smallDevice {
    background-color: blue;
  }
  @include mediumDevice {
    background-color: red;
  }
  @include largeDevice() {
    background-color: purple;
  }
  @include xlargeDevice() {
    background-color: black;
  }
}