css 初始化样式

 清除默认样式                                       2018-09-18

1.淘宝网

body, h1, h2, h3, h4, h5, h6, hr, p, blockquote, dl, dt, dd, ul, ol, li, pre, form, fieldset, legend, button, input, textarea, th, td { margin:0; padding:0; } 
body, button, input, select, textarea { font:12px/1.5tahoma, arial, 5b8b4f53; } 
h1, h2, h3, h4, h5, h6{ font-size:100%; } 
address, cite, dfn, em, var { font-style:normal; } 
code, kbd, pre, samp { font-family:couriernew, courier, monospace; } 
small{ font-size:12px; } 
ul, ol { list-style:none; } 
a { text-decoration:none; } 
a:hover { text-decoration:underline; } 
sup { vertical-align:text-top; } 
sub{ vertical-align:text-bottom; } 
legend { color:#000; } 
fieldset, img { border:0; } 
button, input, select, textarea { font-size:100%; } 
table { border-collapse:collapse; border-spacing:0; }

2.aly

body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,pre,code,legend,buttonform,fieldset,input,textarea,p,blockquote,th,td{padding:0;margin:0;}/*酌情修改*/body{background:#fff;color:#333;font-size:12px;margin-top:5px;font-family:"SimSun",&quo
body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,pre,code,legend,buttonform,fieldset,input,textarea,p,blockquote,th,td { padding: 0; margin: 0; }/* 酌情修改 */body { background:#fff;color:#333;font-size:12px; margin-top:5px;font-family:"SimSun","宋体","Arial Narrow";}/* 短引用的内容可取值:''或"" */q:before,q:after {content:”;} /* 缩写,图片等无边框 */fieldset,img,abbr,acronym {border: 0 none;}abbr,acronym {font-variant: normal;}legend {color:#000;}/* 清除特殊标记的字体和字号 */address,caption,cite,code,dfn,em,strong,th,var { font-weight: normal; font-style: normal; }/* 上下标 */sup {vertical-align: text-top;}sub {vertical-align: text-bottom;}/* 设置表格的边框被合并为一个单一的边框, 指定分隔边框模型中单元格边界之间的距离为0*/table { border-collapse: collapse; border-spacing: 0; } /* 表格标题及内容居左显示 */caption,th {text-align: left;}input,img,select {vertical-align:middle;}/* 清除列表样式 */ol,ul {list-style: none;} /* 输入控件字体 */input,button,textarea,select,optgroup,option { font-family:inherit; font-size:inherit; font-style:inherit; font-weight:inherit;}/* 标题元素样式清除 */ h1,h2,h3,h4,h5,h6 { font-weight: normal; font-size: 100%; } /* 链接样式,颜色可酌情修改 */del,ins,a {text-decoration:none;}a:link {color:#009;}a:visited {color:#800080;}a:hover,a:active,a:focus {color:#c00; text-decoration:underline;} /* 鼠标样式 */input[type="submit"] {cursor: pointer;}button {cursor: pointer;}input::-moz-focus-inner { border: 0; padding: 0;}.clear {clear:both;}

3.腾讯

body,ol,ul,h1,h2,h3,h4,h5,h6,p,th,td,dl,dd,form,fieldset,legend,input,textarea,select{margin:0;padding:0}  
body{font:12px"宋体","Arial Narrow",HELVETICA;background:#fff;-webkit-text-size-adjust:100%;}  
a{color:#2d374b;text-decoration:none}  
a:hover{color:#cd0200;text-decoration:underline}  
em{font-style:normal}  
li{list-style:none}  
img{border:0;vertical-align:middle}  
table{border-collapse:collapse;border-spacing:0}  
p{word-wrap:break-word}

4.新浪

body,ul,ol,li,p,h1,h2,h3,h4,h5,h6,form,fieldset,table,td,img,div{margin:0;padding:0;border:0;}  
body{background:#fff;color:#333;font-size:12px; margin-top:5px;font-family:"SimSun","宋体","Arial Narrow";}  
  
ul,ol{list-style-type:none;}  
select,input,img,select{vertical-align:middle;}  
  
a{text-decoration:none;}  
a:link{color:#009;}  
a:visited{color:#800080;}  
a:hover,a:active,a:focus{color:#c00;text-decoration:underline;}  

5.网易

 html {overflow-y:scroll;}
2 body {margin:0; padding:29px00; font:12px"5B8B4F53",sans-serif;background:#ffffff;}
3 div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,pre,form,fieldset,input,textarea,blockquote,p{padding:0; margin:0;}
4 table,td,tr,th{font-size:12px;}
5 li{list-style-type:none;}
6 img{vertical-align:top;border:0;}
7 ol,ul {list-style:none;}
8 h1,h2,h3,h4,h5,h6{font-size:12px; font-weight:normal;}
9 address,cite,code,em,th {font-weight:normal; font-style:normal;}

　   每次都要重新找太麻烦了，保存下。