<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>内圆角 </title> <style type="text/css"> .meaning{ background:tan; border-radius: .8em; padding:1em; box-shadow: 0 0 0 .6em #655; outline:.6em solid #655; } </style> </head> <body> <div class="meaning"> I have a nice idea </div> <script type="text/javascript"> </script> </body> </html>
原文：https://www.cnblogs.com/xingguozhiming/p/10612232.html