reset.css、layout.css

牛顿是站在巨人伽利略的肩膀上的，我们也可以这么做。首先我们要选定一个前进的基础。

reset.css

/*
Copyright (c) 2009, Shawphy(shawphy.com). All rights reserved.
http://shawphy.com/2009/03/my-own-reset-css.html
Based on YUI http://developer.yahoo.com/yui/reset/ 
and Eric Meyer http://meyerweb.com/eric/tools/css/reset/index.html 
Licensed under the BSD License:
http://creativecommons.org/licenses/BSD/
version: 1.1 | 20090303
*/

body, div, dl, dt, dd, ul, ol, li,
h1, h2, h3, h4, h5, h6, pre, code,
form, fieldset, legend, input, button,
textarea, p, blockquote, th, td {
    margin: 0;
    padding: 0;
}
fieldset, img {
    border: 0;
}
/* remember to define focus styles! */
:focus {
    outline: 0;
}
address, caption, cite, code, dfn,
em, strong, th, var, optgroup {
    font-style: normal;
    font-weight: normal;
}

h1, h2, h3, h4, h5, h6 {
    font-size: 100%;
    font-weight: normal;
}
abbr, acronym {
    border: 0;
    font-variant: normal;
}

input, button, textarea,
select, optgroup, option {
    font-family: inherit;
    font-size: inherit;
    font-style: inherit;
    font-weight: inherit;
}
code, kbd, samp, tt {
    font-size: 100%;
}
/*@purpose To enable resizing for IE */
/*@branch For IE6-Win, IE7-Win */
input, button, textarea, select {
    *font-size: 100%;
}
body {
    line-height: 1.5;
}
ol, ul {
    list-style: none;
}
/* tables still need 'cellspacing="0"' in the markup */
table {
    border-collapse: collapse;
    border-spacing: 0;
}
caption, th {
    text-align: left;
}
sup, sub {
    font-size: 100%;
    vertical-align: baseline;
}
/* remember to highlight anchors and inserts somehow! */
:link, :visited , ins {
    text-decoration: none;
}
blockquote, q {
    quotes: none;
}
blockquote:before, blockquote:after,
q:before, q:after {
    content: '';
    content: none;
}

layout.css

    .clearfix:after { 
        content: ".";
        display: block;
        height: 0;
        clear: both;
        visibility: hidden;
    }
    .clearfix {display: inline-block;}
     
    /* Hides from IE-mac \*/
    * html .clearfix {height: 1%;} 
    .clearfix {display: block;} 
    /* End hide from IE-mac */