@charset "utf-8"; .border, .border-top, .border-right, .border-bottom, .border-left, .border-topbottom, .border-rightleft, .border-topleft, .border-rightbottom, .border-topright, .border-bottomleft { position: relative; } .border::before, .b
@charset "utf-8";.border,.border-top,.border-right,.border-bottom,.border-left,.border-topbottom,.border-rightleft,.border-topleft,.border-rightbottom,.border-topright,.border-bottomleft { position: relative;}.border::before,.border-top::befo
@charset "utf-8";/*reset CSS*/body,ul,ol,dl,dd,h1,h2,h3,h4,h5,h6,figure,form,fieldset,legend,input,textarea,button,p,blockquote,th,td,pre{margin:0;padding:0}body,input,textarea,button,select,pre,tt,code,kbd,samp{line-height:1.5;font-family: &quo
完善meta标签 <meta name="viewport" content="width=device-width, initial-scale=1.0，initial-scale=1.0,minimum-scale=1.0, maximum-scale=1.0,user-scalable=no"> 2.为解决不同手机的不同样式问题 引入reset.css @charset "utf-8";html{bac
