Code sharing on how CSS implements Tab page switching

We have shared a lot of the function of Tab page switching with you. In this article, we mainly introduce to you the example code of using CSS to implement Tab page switching. Friends who need it can refer to it. I hope it can help you.

1.hover

When moving into its parent element .navI, trigger the hover state of the mouse and add the style position:relative to the parent element ;z-index:1;. This increases the level z-index. In the hierarchical competition of the navigation content of its child elements, "the child is more valuable than the father". If the parent element has a higher level, its navigation content will be displayed at the top in the overlapping state

<style>
body,p{margin: 0;}
h2{margin: 0;font-size:100%;}
ul{margin: 0;padding: 0;list-style: none;}   
a{text-decoration: none;color:inherit;}
.box{width: 572px;border: 1px solid #999;overflow: hidden;}
.nav{margin-left: -1px;font: 14px "微软雅黑";overflow: hidden;background-color: #f1f1f1;}
.navI{float: left;width: 33.333%;box-sizing: border-box;}
.navI-tit{line-height: 40px;text-align: center;cursor: pointer;border-left: 1px solid #cecece;border-bottom: 1px solid #cecece;}
.navI-txt{width: 572px;height:200px;text-indent:2em;line-height: 2;background:#fff;}
.ml1{margin-left: -100%;}
.ml2{margin-left: -200%;}
.navI_active{position:relative;z-index:1;}
/*重点代码*/
.navI:hover{position:relative;z-index:1;}
.navI:hover .navI-tit{background:#fff;border-bottom:none;}
</style>

<p class="box">
    <ul class="nav">
        <li class="navI navI_active">
            <h2 class="navI-tit">课程</h2>
            <p class="navI-txt">课程内容</p>
        </li>
        <li class="navI">
            <h2 class="navI-tit">学习计划</h2>
            <p class="navI-txt ml1">学习计划内容</p>
        </li>
        <li class="navI">
            <h2 class="navI-tit">技能图谱</h2>
            <p class="navI-txt ml2">技能图谱内容</p>
        </li>
    </ul>   
</p>

2. Anchor point

When the navigation title is clicked, the target pseudo-class is triggered and the level z-index of the corresponding navigation content is changed, so that the current navigation content is in The winner among the three navigation contents will be displayed on the top layer; at the same time, change the style of the current navigation title

<style>
body,p{margin: 0;}
h2{margin: 0;font-size:100%;}
ul{margin: 0;padding: 0;list-style: none;}   
a{text-decoration: none;color:inherit;}
.box{width: 572px;border: 1px solid #999;overflow: hidden;}
.nav{margin-left: -1px;font: 14px "微软雅黑";overflow: hidden;background-color: #f1f1f1;}
.navI{float: left;width: 33.333%;box-sizing: border-box;position:relative;}
.navI-tit{position:absolute;top:0;left:0;right:0;box-sizing: border-box;line-height: 40px;height: 40px;text-align: center;cursor: pointer;border-left: 1px solid #cecece;border-bottom: 1px solid #cecece;}
.navI-txt{width: 572px;height:200px;margin-top: 40px;text-indent:2em;line-height: 2;background:#fff;}
.ml1{margin-left: -100%;}
.ml2{margin-left: -200%;}
.navI_active{z-index:1;}
/*重点代码*/
.navI-txt:target{position:relative;z-index:1;}
.navI-txt:target ~ .navI-tit{background:#fff;border-bottom:none;}
</style>
<p class="box">
    <ul class="nav">
        <li class="navI navI_active">
            <p class="navI-txt" id="kc">课程内容</p>
            <a class="navI-tit" href="#kc">课程</a>
        </li>
        <li class="navI">
            <p class="navI-txt ml1" id="xx">学习计划内容</p>
            <a class="navI-tit" href="#xx">学习计划</a>
        </li>
        <li class="navI">
            <p class="navI-txt ml2" id="jn">技能图谱内容</p>
            <a class="navI-tit" href="#jn">技能图谱</a>
        </li>
    </ul>   
</p>

3.radio

When the navigation title is clicked, the checked pseudo-class is triggered and the z-index of the corresponding navigation content is changed, so that the current navigation content wins among the three navigation content and is displayed on the top layer; with this At the same time, change the style of the current navigation title

<style>
body,p{margin: 0;}
ul{margin: 0;padding: 0;list-style: none;}
a{text-decoration: none;color: inherit;}
input{margin: 0;padding: 0;border:none;}
.box{width:572px;border:1px solid #999;font:14px "微软雅黑";overflow:hidden;}
.nav-tit{margin-left: -1px;height: 40px;line-height: 40px;text-align: center;background-color: #f1f1f1;overflow: hidden;}
.nav-titI{box-sizing: border-box;float: left;width: 33.333%;border-left: 1px solid #cecece;border-bottom: 1px solid #cecece;cursor: pointer;}
.nav-txt{height: 200px;}
.nav-txtI{height: 200px;display:block;width: 100%;text-indent: 2em; line-height: 2;}
/*重点内容*/
.nav-txt{overflow: hidden;}
.nav-titI:hover{background-color: #fff;border-bottom:none;}
</style>
<p class="box">
    <nav class="nav-tit">
        <label class="nav-titI" for="kc">课程</label>
        <label class="nav-titI" for="xx">学习计划</label>
        <label class="nav-titI" for="jn">技能图谱</label>
    </nav>
    <nav class="nav-txt">
        <input class="nav-txtI nav-txtI_active" id="kc" value="课程内容" readonly>
        <input class="nav-txtI" id="xx" value="学习计划内容" readonly>
        <input class="nav-txtI" id="jn" value="技能图谱内容" readonly>
    </nav>
</p>

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