蔡元长,暴走大事件36期,临淄天气
示例1:
<html> <body> <style> #a:hover {color : #ffff00;} #a:hover > #b:first-child{color : #ff0000;} #a:hover > #b{color : #ff00ff;} #a:hover + #c{color : #00ff00;} #a:hover + #c > #b{color : #0000ff;} </style> <div id='a'>元素1 <div id='b'>元素2</div> <div id='b'>元素2</div> </div> <div id='c'>元素3 <div id='b'>元素2</div> </div> </body> </html>
示例2:
<html> <body> <style> .header-bar-search { width: 300px; height: 50px; font-size: 16px; margin-top: 100px; margin-left: 40%; } .header-bar-search input{ display: inline-block; height: 50px; outline: 0; border: 1px solid #e0e0e0; background: #fff; transition: border-color .3s linear,color .3s linear,background-color .3s linear; } .header-bar-search .searchiput1 { width: 250px; padding: 0 10px; border-right: none; } .header-bar-search .searchiput2 { float: right; width: 50px; font-size: 20px; } .searchiput1:hover{ border-color: #ff6700; } .searchiput2:hover{ color: #fff; background: #ff6700; } .searchiput1:hover + .searchiput2{ border-color: #ff6700; } </style> <div class="header-bar-search"> <h3>tps:请将鼠标悬浮至搜索框和按钮上</h3> <form action=""> <input type="text" class="searchiput1"> <input type="submit" value="
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css3 flex布局 justify-content:space-between 最后一行左对齐
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