JSFiddle - React, Tailwind, and code Playground

by Wentz Wu

HTML

<div id="wrapper">
    <div>
        <p>this is line 1</p>
    </div>
    <div id="box2">
        <div id="box2a">
            <p>this is line 2</p>
            <p>this is line 2</p>
            <div>test</div>
        </div>
    </div>
</div>

CSS

#wrapper {
    position: relative;
    top: 50px;
    left: 50px;
    width: 400px;
    height: 200px;
    padding: 5px;
    border: 1px red solid;
}
#wrapper div {
    border: 1px red solid;
    margin: 5px;
    padding: 5px;
    width: 150px;
    height: 150px;
    background-color: grey;
}
#wrapper div:nth-child(2) {
    background-color: red;
    float: right;
    position: relative;
    top: -90px;
    right: 50px;
    z-index: -1;
}
/* 若selector使用#box2,其style不人會生效; 因為#wrapper div設定會優先 */
 #wrapper div:nth-child(2) div {
    background-color: white;
    width: 100px;
    height: 100px;
    text-align: center;
    vertical-align: middle;
    display:table-cell;
}
#wrapper div:nth-child(2) div div:first-of-type {
    background-color:blue;
    width: 30px;
    height: 30px;
    display: block;
    margin-left: auto;
    margin-right: auto;
}
p {
    margin: 0;
}