粗暴初始化：
* {margin:0;padding:0;border:0px none;}
优化初始化：
/*css reset code */
/**** 文字大小初始化,使1em=10px *****/
body {
font-size:62.5%;
} /* for IE/Win */
html>body {
font-size:10px;
} /* for everything else */
/*字体边框等初始化*/
body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,pre,form,fieldset,input,textarea,p,blockquote,th,td {
padding: 0;
margin: 0;
}
table {
border-collapse: collapse;
border-spacing: 0;
}
fieldset,img {
border: 0;
}
img {
display:block;
}
address,caption,cite,code,dfn,th,var {
font-weight: normal;
font-style: normal;
}
ol,ul {
list-style: none;
}
caption,th {
text-align: left;
}
h1,h2,h3,h4,h5,h6 {
font-weight: normal;
font-size: 100%;
}
q:before,q:after {
content:‘‘;
}
abbr,acronym { border: 0;
}
a {
text-decoration:none;
}
Css之 间距初始化
原文地址：https://www.cnblogs.com/andy6/p/10273795.html