【怎么设置自适应居中的高度。】

怎么设置自适应居中的高度。

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回答(4)

详细描述

截图

代码

html{
    font-size: 312.5%;
}
body{
    margin: 0;
    font-size: initial;
    background-color: #29BDE0;
}
header{
    position: fixed;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 .24rem;
    top: 0;
    left: 0;
    right: 0;
    height: .88rem;
    color: #FFFFFF;
    font-size: .34rem;
    z-index: 1;
}
.key-box{
    display: flex;
    justify-content: center;
    align-items: center;
    width: .4rem;
    height: .4rem;
    border: .02rem solid #FFFFFF;
}
.key{
    padding: .1rem 0;
    width: .3rem;
    height: .02rem;
    border-top: .02rem solid #FFFFFF;
    border-bottom: .02rem solid #FFFFFF;
    background: #FFFFFF content-box;
}
.close{
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    height: .6rem;
    width: .6rem;
}
.line-left{
    height: .5rem;
    width: .04rem;
    transform: rotate(45deg);
    background-color: #FFFFFF;
}
.line-right{
    position: absolute;
    height: .5rem;
    width: .04rem;
    transform: rotate(-45deg);
    background-color: #FFFFFF;
}
main{
    position: relative;
}
.speak{
    display: flex;
    justify-content: space-between;
    margin-top: .88rem;
    align-items: center;
    height: .82rem;
    background-color: #B9E9F5;
}
.speak::before{
    position: absolute;
    top: .82rem;
    left: .71rem;
    content: "";
    border-top: .28rem solid #B9E9F5;
    border-left: .14rem solid transparent;
    border-right: .14rem solid transparent;
}
.discuss{
    margin-left: .46rem;
    font-size: .26rem;
    color: #464646;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    letter-spacing: .02rem;
}
.circular{
    display: flex;
    justify-content: center;
    align-items: center;
    margin-right: .17rem;
    height: .52rem;
    width: .52rem;
    border-radius: 50%;
    background-color: #FBB435;
}
.triangle{
    display: inline-block;
    border-left: .26rem solid #FFFFFF;
    border-top: .13rem solid transparent;
    border-bottom: .13rem solid transparent;
}
.click{
    margin-top: .25rem;
    margin-left: .72rem;
    font-size: .24rem;
    letter-spacing: .04rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: #FFFFFF;
}
ul{
    margin: 0;
    padding: .43rem .43rem 0 .43rem;
    list-style: none;
}
li{
    margin: 0;
    padding: 0;
    list-style: none;
}
p {
    margin: 0;
}
.first-row{
    display: flex;
    justify-content: space-between;
}
.square{
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    border: .05rem solid #FFFFFF;
}
.squaree{
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    margin: 0 .71rem;
    
    width: 100%;
    border: .05rem solid #FFFFFF;
}
.civil{
    width: 100%;
    font-size: .3rem;
    color: #565656;
    line-height: 1rem;
    letter-spacing: .04rem;
    white-space: nowrap;
    background-color: #F5C97B;
}
.number{
    width: 100%;
    font-size: .23rem;
    letter-spacing: .02rem;
    white-space: nowrap;
    color: #FFFFFF;
    background-color: #83B09A;

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>task7-2</title>
    <link rel="stylesheet" type="text/css" href="../css/task7-2.css">
</head>
<body>
<header>
     <span class="key-box"><a class="key" href="http://www.jnshu.com/task/1/39/detail//#0"></a></span>
     <span>投票</span>
     <div class="close">
         <span class="line-left"></span>
         <span class="line-right"></span>
    </div>
</header>
<main>
<div class="speak">
    <span class="discuss">发言讨论结束，大家请投票</span>
    <span class="circular">
        <a class="triangle" href="http://www.jnshu.com/task/1/39/detail//#0"></a>
    </span>
</div>
<p class="click">点击得票数最多人的头像</p>
<ul>
    <li class="first-row">
         <div class="square">
             <p class="civil">水民</p>
             <p class="number">1号</p>
         </div>
         <div class="squaree">
             <p>水民</p>
             <p>2号</p>
         </div>
         <div class="square">
             <p>警察</p>
             <p>3号</p>
         </div>
    </li>
</ul>
</main>
</body>
</html>

编辑于2025-04-01

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[上海|结业弟子]JS-任我行
1

这个地方的盒子使用vw来做单位
vw是相对于视窗的宽度，视窗的宽度为100vw
包括里面的字体大小都可以用vw单位
来实现自适应的布局

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编辑于2018-11-02
[上海|荣耀师兄]JS-王刚
0

这里只要采用和宽度一样的单位就可以了，由于高度不能直接设置为百分比。
我们可以采用vw 和vh单位，vw和vh是相对于视窗的单位，根据视窗的大小而变化。
一般都是使用vw来实现效果，将width和height设置为相同的数值

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编辑于2018-11-09
[无名弟子]JS-柳桐
0

我在做的时候在外面又包了一个盒子，你可以试试。

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编辑于2018-12-15
[上海|结业弟子]JS-燕赤霞
0

用vw、vh做单位，例如宽高都为20vw，或者20vh就可以啦

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编辑于2018-12-28

去第页