html,body,h1,h2,h3,h4,h5,h6,div,p,ul,li,ol,p { ???margin: 0; ???padding: 0;}input { ???display: block; ???box-sizing: border-box; ???width: 100%; ???height: 100%; ???padding: 0; ???border: none; ???outline: none;}li { ???list-style: none;}a { ???display: block; ???text-decoration: none;}img{ ???width: 100%; ???display: block;}// 清除浮动.clearfix:after, .clearfix:before{ ???clear:both; ???content:‘.‘; ???display:block; ???width: 0; ???height: 0; ???visibility:hidden;}.clearfix{ ???zoom: 1;}@media (min-width: 768px) { ???html{ ???????font-size: 12px; ???}}@media (min-width: 992px) { ???html{ ???????font-size: 18px; ???}}@media (min-width: 1200px) { ???html{ ???????font-size: 24px; ???}}base.css默认公共样式
原文地址：https://www.cnblogs.com/queende7/p/8668369.html