使用方法:.父元素:hover .子元素(hover和子元素之间需要一个空格),如:
.a:hover .b
演示效果:

代码:
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title></title> <style> .alarm:hover .divright { display: block; } .alarm { position: relative; width: 60px; height: 60px; margin: 60px; } .alarm img { width: 60px; height: 60px; } .divright { position: absolute; color: white; font-size: 17px; background-color: red; width: 23px; height: 25px; line-height: 25px; left: 80%; top: -12px; text-align: center; -webkit-border-radius: 24px; border-radius: 24px; display: none; } </style> </head> <body> <div class="alarm"> <img src="img/1.png" /> <div class="divright"> 3 </div> </div> </body> </html> |