About the content of base code base.css in CSS

base.css, as the name suggests, means base code. It is mainly a collection of reset browser default styles. Adding it when doing CSS layout will improve writing efficiency. Interested friends can refer to it

The code is as follows:

/***** css set*****/ 
body, p, dl, dt, dd,ul,ol,li,h1,h2,h3,h4,h5,h6,pre,form,fieldset,input,textarea,p,blockquote，th,td{margin:0;padding:0;} 
table{border-collapse:collapse;border-spacing:0;} 
fieldset,img {border:0;} 
address,caption, cite,code,dfn,em,strong,th,var{font-style:normal;font-weight:normal;} 
ol,ul {list-style:none;} 
capation,th{text-align:left;} 
h1,h2,h3,h4,h5,h6{font-size:100%;font-weight:normal;} 
q:before, q:after{content:' '} 
abbr,acronym{border:0;} 
/*****文字排版******/ 
.f12{font-size:12px;} 
.f13{font-size:13px;} 
.f14{font-size:14px;} 
.f16{font-size:16px;} 
.f20{font-size:20px;} 
.fb{font-weight:bold;} 
.fn{font-weight:normal;} 
.t2{text-indent:2em;} 
.lh150{line-height:150%} 
.lh180{line-height:180%} 
.lh200{line-height:200%} 
.unl{text-decoration:underline;} 
.no_unl{text-decoration:none;} 
/****定位****/ 
.tl{text-align:left;} 
.tc{text-align:center;} 
.tr{text-align:right;} 
.bc{margin-left:auto;margin-right:auto;} 
.fl{float:left;display:inline;} 
.fr{float:right;display:inline;} 
.cb{clear:both;} 
.cl{clear:left;} 
.cr{clear:right;} 
.clearfix:after{content:'.';display:block;height:0;clear:both;visibility:hidden} 
.clearfix{display:inline-block;} 
*html .clearfix{height:1%} 
. Clearfix{display:block;} 
.vm{vertical-align:center;} 
.pr{position:relative;} 
.pa{position:absolute;} 
.abs-right{position:absolute;right:0;} 
.zoom{zoom:1} 
.hidden{visibility:hidden;} 
.none{display:none;} 
/******长度 高度*******/ 
.w10{width:10px;} 
.w20{width:20px;} 
.w30{width:30px;} 
.w40{width:40px;} 
.w50{width:50px;} 
.w60{width:60px;} 
.w70{width:70px;} 
.w80{width:80px;} 
.w90{width:90px;} 
.w100{width:100px;} 
.w200{width:200px;} 
.w300{width:300px;} 
.w400{width:400px;} 
.w500{width:500px;} 
.w600{width:600px;} 
.w700{width:700px;} 
.w800{width:800px;} 
.w{width:100%} 
.h50{height:50px;} 
.h80{height:80px;} 
.h100{height:100px;} 
.h200{height:200px;} 
.h{height:100%} 
/******边距*******/ 
.m10{margin:10px;} 
.m15{margin:15px;} 
.m30{margin:30px;} 
.mt5{margin-top:5px;} 
.mt10{margin-top:10px;} 
.mt15{margin-top:15px;} 
.mt20{margin-top:20px;} 
.mt30{margin-top:30px;} 
.mt50{margin-top:50px;} 
.mt100{margin-top:100px;} 
.mb5{margin-bottom:5px;} 
.mb10{margin-bottom:10px;} 
.mb15{margin-bottom:15px;} 
.mb20{margin-bottom:20px;} 
.mb30{margin-bottom:30px;} 
.mb50{margin-bottom:50px;} 
.mb100{margin-bottom:100px;} 
.ml5{margin-left:5px;} 
.ml10{margin-left:10px;} 
.ml15{margin-left:15px;} 
.ml20{margin-left:20px;} 
.ml30{margin-left:30px;} 
.ml50{margin-left:50px;} 
.ml100{margin-left:100px;} 
.mr5{margin-right:5px;} 
.mr10{margin-right:10px;} 
.mr15{margin-right:15px;} 
.mr20{margin-right:20px;} 
.mr30{margin-right:30px;} 
.mr50{margin-right:50px;} 
.mr100{margin-right:100px;} 
.p10{padding:10px;} 
.p15{padding:15px;} 
.p30{padding:30px;} 
.pt5{padding-top:5px;} 
.pt10{padding-top:10px;} 
.pt15{padding-top:15px;} 
.pt20{padding-top:20px;} 
.pt30{padding-top:30px;} 
.pt50{padding-top:50px;} 
.pt100{padding-top:100px;} 
.pb5{padding-bottom:5px;} 
.pb10{padding-bottom:10px;} 
.pb15{padding-bottom:15px;} 
.pb20{padding-bottom:20px;} 
.pb30{padding-bottom:30px;} 
.pb50{padding-bottom:50px;} 
.pb100{padding-bottom:100px;} 
.pl5{padding-left:5px;} 
.pl10{padding-left:10px;} 
.pl15{padding-left:15px;} 
.pl20{padding-left:20px;} 
.pl30{padding-left:30px;} 
.pl50{padding-left:50px;} 
.pl100{padding-left:100px;} 
.pr5{padding-right:5px;} 
.pr10{padding-right:10px;} 
.pr15{padding-right:15px;} 
.pr20{padding-right:20px;} 
.pr30{padding-right:30px;} 
.pr50{padding-right:50px;} 
.pr100{padding-right:100px;}

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