CSS----reset.css 文件

 blockquote,
 body,
 button,
 dd,
 dl,
 dt,
 fieldset,
 form,
 h1,
 h2,
 h3,
 h4,
 h5,
 h6,
 hr,
 input,
 legend,
 li,
 ol,
 p,
 pre,
 td,
 textarea,
 th,
 ul {
     margin: 0;
     padding: 0
 }

 body,
 button,
 input,
 select,
 textarea {
     font: 12px/1.5 tahoma, arial, 'Hiragino Sans GB', '\5b8b\4f53', sans-serif;
 }

 h1,
 h2,
 h3,
 h4,
 h5,
 h6 {
     font-size: 100%
 }

 address,
 cite,
 dfn,
 em,
 var {
     font-style: normal;
 }

 code,
 kbd,
 pre,
 samp {
     font-family: courier new, courier, monospace;
 }

 small {
     font-size: 12px;
 }

 ol,
 ul {
     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;
 }