.go_to_user::after{ border:1px solid #D74D43; }
button的class为go_to_user
button{ padding:0; box-sizing: inherit; margin:0; font-size: inherit; }
.go_to_user::after{ border:1px solid #D74D43; }
button的class为go_to_user
button{ padding:0; box-sizing: inherit; margin:0; font-size: inherit; }
原文：https://www.cnblogs.com/Basu/p/8487936.html