1.hover
移入其父元素.navI時，觸發鼠標的hover態，給父元素添加樣式為position:relative;z-index:1;。從而提升了層級z-index。在其子元素導航內容的層級比拼中，“子憑父貴”，父元素層級高的，其導航內容在重疊狀態中顯示在最上面
<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 "微軟雅黑";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;}/*重點代碼*/.navI:hover{position:relative;z-index:1;}.navI:hover .navI-tit{background:#fff;border-bottom:none;}</style><div class="box"> <ul class="nav"> <li class="navI navI_active"> <h2 class="navI-tit">課程</h2> <p class="navI-txt">課程內容</p> </li> <li class="navI"> <h2 class="navI-tit">學習計劃</h2> <p class="navI-txt ml1">學習計劃內容</p> </li> <li class="navI"> <h2 class="navI-tit">技能圖譜</h2> <p class="navI-txt ml2">技能圖譜內容</p> </li> </ul> </div>2.錨點
點擊導航標題時，觸發target偽類，改變對應的導航內容的層級z-index，從而使當前導航內容在三個導航內容中勝出，在最上層顯示；與此同時，改變當前導航標題的樣式
<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 "微軟雅黑";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;}/*重點代碼*/.navI-txt:target{position:relative;z-index:1;}.navI-txt:target ~ .navI-tit{background:#fff;border-bottom:none;}</style><div class="box"> <ul class="nav"> <li class="navI navI_active"> <p class="navI-txt" id="kc">課程內容</p> <a class="navI-tit" href="#kc">課程</a> </li> <li class="navI"> <p class="navI-txt ml1" id="xx">學習計劃內容</p> <a class="navI-tit" href="#xx">學習計劃</a> </li> <li class="navI"> <p class="navI-txt ml2" id="jn">技能圖譜內容</p> <a class="navI-tit" href="#jn">技能圖譜</a> </li> </ul> </div>3.radio
點擊導航標題時，觸發checked偽類，改變對應的導航內容的層級z-index，從而使當前導航內容在三個導航內容中勝出，在最上層顯示；與此同時，改變當前導航標題的樣式
<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 "微軟雅黑";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;}/*重點內容*/.nav-txt{overflow: hidden;}.nav-titI:hover{background-color: #fff;border-bottom:none;}</style><div class="box"> <nav class="nav-tit"> <label class="nav-titI" for="kc">課程</label> <label class="nav-titI" for="xx">學習計劃</label> <label class="nav-titI" for="jn">技能圖譜</label> </nav> <nav class="nav-txt"> <input class="nav-txtI nav-txtI_active" id="kc" value="課程內容" readonly> <input class="nav-txtI" id="xx" value="學習計劃內容" readonly> <input class="nav-txtI" id="jn" value="技能圖譜內容" readonly> </nav></div>總結
以上所述是小編給大家介紹的CSS實現Tab頁切換實例代碼，希望對大家有所幫助，如果大家有任何疑問請給我留言，小編會及時回復大家的。在此也非常感謝大家對VeVb武林網網站的支持！
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