JSFiddle - React, Tailwind, and code Playground

by tiki zzz

HTML

<h3>6.用flex做垂直居中(单/多)</h3>
        <div class="flex-cont flex-centerbox">
            <div class="center-cont">
                <h2>Title</h2>
                <p>infomation </p>
                <p>infomation </p>
                <button class="f-btn">btn</button>
            </div>
        </div>
        <div class="flex-cont flex-centerbox">
            <div class="center-cont">
                <h2>Title</h2>
                <p>infomation </p>
                <p>infomation </p>
                <button class="f-btn">btn</button>
            </div>
            <div class="center-cont">
                <h2>Title</h2>
                <p>infomation </p>
                <p>infomation </p>
                <button class="f-btn">btn</button>
            </div>
        </div>

CSS

h3{
    line-height: 36px;
    height: 36px;
    padding-left: 20px;
    background: #f2f2f2;
    margin:20px 0;
}
p{margin:0;padding:0}
.f-icon {
    display: block;
    width: 20px;
    height: 20px;
    background: #31BBEE;
    flex:none;
}
.flex-cont{
    /*定义为flexbox的"父元素"*/
    display: -webkit-box; 
    display: -webkit-flex;
    display: flex;
}
.flex-item{
    /*给"子元素"赋予自由伸缩的能力*/
    -webkit-box-flex: 1;
    -webkit-flex: 1;
    flex: 1;
    width: 0%;
}
/*垂直居中*/
.flex-centerbox{
    width: 100%;
    height: 200px;
    background: #fafafa;
    /*子元素沿主轴对齐方式居中*/
    -webkit-box-pack: center;
    -webkit-justify-content: center;
    justify-content: center;
    /*子元素沿侧轴对齐方式垂直居中*/
    -webkit-box-align: center;
    -webkit-align-items: center;
    align-items: center;
    border-top:1px solid #ddd;
    border-bottom: 1px solid #ddd;
    padding:10px 0;
    margin:10px 0;
}
.center-cont{
    display: block;
    background: #ddd;
    text-align: center;
    padding:20px;
    margin:10px;
}