CSS学习手册

学习别人的CSS，这是一个传送门

布局

实现水平垂直居中

在flex 格式化上下文中，设置了margin: auto的元素，在通过justify-content和align-self进行对齐之前，任何正处于空闲的空间都会分配到该方向的自动 margin 中去。

		<div class="box">
			<div class="content"></div>
		</div>

		<style>
			*{
				margin: 0;
				padding: 0;
			}
			.box{
				width: 100vw;
				height: 100vh;
				display: flex;
			}
			.content{
				margin: auto;
				width: 50px;
				height: 50px;
				background-color: #000;
			}
		</style>

效果如下：

双飞翼布局

双飞翼布局实现左中右三列布局，渲染时中间列比左右两列提前渲染，左右两列定宽，中间列自适应剩余宽度。

双飞翼布局的中间容器多了一个子容器，通过控制这个子容器的margin或者padding空出左右两列的宽度。

		<div class="box">
			<div class="middle">
				<div class="content">#content</div>
			</div>
			<div class="left">#left</div>
			<div class="right">#right</div>
		</div>


		<style>
			*{
				margin: 0;
				padding: 0;
			}
			.box{
				min-width: 500px;
				background-color: blue;
				height: 100px;
			}
			.middle{
				width: 100%;
				height: 100px;
				background-color: pink;
				float: left;
			}
			.content{
				margin-left: 100px;
				margin-right: 100px;
			}
			.left,.right{
				width: 100px;
				float: left;
				height: 100px;
			}
			.left{
				margin-left: -100%;
				background-color: red;
			}
			.right{
				margin-left: -100px;
				background-color: yellow;
			}
		</style>

效果如下：

grid布局配合clip-path实现GTA5封面

可以使用grid布局配合clip-path来实现造型怪异的网格。

<template>
  		<div class="parent">
  			<div class="child">
  				<img src="../assets/images/1.png">
  			</div>
  			<div class="child">
  				<img src="../assets/images/2.png">
  			</div>
  			<div class="child">
  				<img src="../assets/images/3.png">
  			</div>
  			<div class="child">
  				<img src="../assets/images/4.png">
  			</div>
  			<div class="child">
  				<img src="../assets/images/9.png">
  			</div>
  			<div class="child">
  				<img src="../assets/images/6.png">
  			</div>
  			<div class="child">
  				<img src="../assets/images/7.png">
  			</div>
  			<div class="child">
  				<img src="../assets/images/8.png">
  			</div>
  			<div class="child">
  				<img src="../assets/images/5.png">
  			</div>
  		</div>
</template>

<style scoped lang="scss">
	body{
		box-sizing: border-box;
	}
img{
  width:100%;
  height: 100%;
  object-fit: cover;
  object-position: 40% 0;
}

.parent{
  padding: .8rem;
  background: black;
  height: 95vh;
  min-height: 500px;
  width: 100%;
  max-width: 600px;
  margin: auto;
  margin-top: 2.5vh;
  border: 1px solid #c9b473;
  overflow: hidden;
  display: grid;

  grid-template-columns: 1fr .7fr .3fr 1fr;
  grid-template-rows: 20% 40% 20% 20%;
  grid-template-areas: 'one two two three'
    'four five five five'
    'six five five five'
    'six seven eight eight';
}
.child{

  &:nth-child(1),
  &:nth-child(2),
  &:nth-child(3){
    img{
      width:120%;
      height: 120%;
    }
  }
  &:first-child{
    grid-area: one;
    clip-path: polygon(0% 0%, 93.24% 0%, 105.04% 110.16%, 0% 90%);
  }
  &:nth-child(2){
    grid-area: two;
    clip-path: polygon(0% 0%, 108.28% 0%, 96.45% 110.13%, 10.55% 110.93%);
  }
  &:nth-child(3){
    grid-area: three;
    clip-path:polygon(15.05% 0%, 100% 0%, 99.35% 91.7%, 3.08% 108.48%);
  }
  &:nth-child(4){
    grid-area: four;
    clip-path: polygon(0% -0.85%, 106.34% 9.98%, 121.32% 65.63%, 99.66% 109.89%, 1.86% 124.41%);

    img{
      width: 135%;
      height: 135%;
    }
  }
  &:nth-child(5){
    grid-area: five;
    clip-path: polygon(6.4% 6.48%, 47.24% 5.89%, 100% 0%, 98.41% 96.85%, 53.37% 100%, 53% 63.21%, 3.23% 73.02%, 14.30% 44.04%);
  }
  &:nth-child(6){
    grid-area: six;
    clip-path:  polygon(2.14% 29.3%, 99.34% 15.42%, 98.14% 100.82%, 1.57% 101.2%);
  }
  &:nth-child(7){
    grid-area: seven;
    clip-path: polygon(7.92% 33.47%, 96.31% 23.39%, 95.38% 100%, 5.30% 100.85%);
  }
  &:nth-child(8){
    grid-area: eight;
    clip-path: polygon(2.5% 22.35%, 100% 0%, 100% 100%, 1.55% 100%);
  }
  &:nth-child(9){
    grid-row-start: 3;
    grid-row-end: 4;
    grid-column-start: 2;
    grid-column-end: 4; 

    clip-path:polygon(5.94% 28.66%, 100.61% -0.67%, 101.1% 108.57%, 5.4% 126.28%);

    img{
      object-position: 30% 50%;
      height: 135%;
    }
  }
}
</style>

效果如下：