Edit The Code:
See Result »
Try it Yourself - ©
w3big.com
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>本教程(w3big.com)</title> <style> div { border:2px solid; padding:10px; background:#dddddd; border-top-left-radius:2em; -webkit-border-top-left-radius:2em; /* Safari */ } </style> </head> <body> <div> border-top-left-radius 属性允许添加 一个圆角到左上角.</div> </body> </html>