<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>菜鸟教程(runoob.com)</title> <style> #grad1 { height: 200px; border:3px solid; border-image: linear-gradient( red 10%, #fff 10%) 1 1; } </style> </head> <body> <div id="grad1"></div> </body> </html>
原文：https://www.cnblogs.com/Queeny-LXY/p/9122645.html