从Chrome中提取出来的WebUI样式CSS Transition通过改变Height实现展开收起元素从QQtabBar看css命名规范BEM的详细介绍css实现两栏布局，左侧固定宽，右侧自适应的多种方法CSS 实现Chrome标签栏的技巧CSS实现两列布局的N种方法CSS实现隐藏搜索框功能(动画正反向序列)CSS3中Animation实现简单的手指点击动画的示例详解CSS中的特指度和层叠问题详解overflow:hidden的作用(溢出隐藏、清除浮动、解决外边距塌陷)关于CSS浮动与取消浮动的问题

/* Copyright (c) 2012 The Chromium Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
button:not(.custom-appearance),input[type='button']:not(.custom-appearance),input[type='submit']:not(.custom-appearance),input[type='reset']:not(.custom-appearance){-webkit-border-radius:3px;-webkit-box-shadow:0 1px 3px rgba(0,0,0,0.1);-webkit-user-select:none;background:-webkit-linear-gradient(#fafafa,#f4f4f4 40%,#e5e5e5);border:1px solid #aaa;color:#444;font-size:inherit;margin-bottom:0;min-width:4em;padding:3px 12px}button:not(.custom-appearance):hover,input[type='button']:not(.custom-appearance):hover,input[type='submit']:not(.custom-appearance):hover,input[type='reset']:not(.custom-appearance):hover{-webkit-box-shadow:0 1px 3px rgba(0,0,0,0.2);background:#ebebeb -webkit-linear-gradient(#fefefe,#f8f8f8 40%,#e9e9e9);border-color:#999;color:#222}button:not(.custom-appearance):active,input[type='button']:not(.custom-appearance):active,input[type='submit']:not(.custom-appearance):active,input[type='reset']:not(.custom-appearance):active{-webkit-box-shadow:inset 0 1px 3px rgba(0,0,0,0.2);background:#ebebeb -webkit-linear-gradient(#f4f4f4,#efefef 40%,#dcdcdc);color:#333}button[disabled]:not(.custom-appearance),input[type='button'][disabled]:not(.custom-appearance),input[type='submit'][disabled]:not(.custom-appearance),input[type='reset'][disabled]:not(.custom-appearance),button[disabled]:not(.custom-appearance):hover,input[type='button'][disabled]:not(.custom-appearance):hover,input[type='submit'][disabled]:not(.custom-appearance):hover,input[type='reset'][disabled]:not(.custom-appearance):hover{cursor:not-allowed;-webkit-box-shadow:none;background:-webkit-linear-gradient(#fafafa,#f4f4f4 40%,#e5e5e5);border-color:#aaa;color:#888}button:not(.custom-appearance):focus,input[type='submit']:not(.custom-appearance):focus,input[type='reset']:not(.custom-appearance):focus,input[type='text']:not(.custom-appearance):focus,select:not(.custom-appearance):focus{-webkit-box-shadow:inset 0 1px 2px white,0 1px 2px rgba(0,0,0,.2),0 0 1px #c0c0c0,0 0 1px #c0c0c0,0 0 1px #c0c0c0;-webkit-transition:border-color 200ms;border-color:#4080fa;outline:0}input[type='search']:not(.custom-appearance):focus{outline-color:#4080fa}.link-button,.link-button:focus{-webkit-box-shadow:none!important;background:transparent none!important;border:none!important;color:#15c!important;cursor:pointer;font-family:inherit;margin:0;padding:0 4px!important}.link-button:hover{text-decoration:underline}.link-button:active{color:#052577!important;text-decoration:underline}
input[type='checkbox']{-webkit-box-shadow:inset 0 1px 2px white,0 1px 2px rgba(0,0,0,.2);-webkit-appearance:none;-webkit-margin-start:0;-webkit-margin-end:3px;background:-webkit-linear-gradient(#fafafa,#dcdcdc);border-radius:3px;border:1px solid #a0a0a0;display:inline-block;height:16px;margin-bottom:0;margin-top:0;position:relative;top:3px;vertical-align:baseline;width:16px}input[type='checkbox']:disabled{cursor:not-allowed;opacity:.75}input[type='checkbox']:not(:disabled):not(:active):hover{background:-webkit-linear-gradient(#fff,#e6e6e6);text-shadow:0 1px 0 rgba(255,255,255,1)}input[type='checkbox']:not(:disabled):active{-webkit-box-shadow:inset 0 1px 3px rgba(0,0,0,.2);background:-webkit-linear-gradient(#f0f0f0,#bebebe);border:1px solid #808080;text-shadow:0 1px 0 rgba(255,255,255,.25)}input[type='checkbox']:checked::before{color:#808080;content:url(checkmark.png);font-size:13px;height:16px;left:2px;position:absolute}input[type='radio']{-webkit-box-shadow:inset 0 1px 2px white,0 1px 2px rgba(0,0,0,.2);-webkit-appearance:none;-webkit-margin-start:0;-webkit-margin-end:3px;-webkit-transition:border 500ms;background:-webkit-linear-gradient(#fafafa,#dcdcdc);border-radius:100%;border:1px solid #a0a0a0;display:inline-block;height:15px;margin-bottom:0;position:relative;top:3px;vertical-align:baseline;width:15px}input[type='radio']:disabled{cursor:not-allowed;opacity:.75}input[type='radio']:not(:disabled):not(:active):hover{background:-webkit-linear-gradient(#fff,#e6e6e6);text-shadow:0 1px 0 rgba(255,255,255,1)}input[type='radio']:not(:disabled):active{-webkit-box-shadow:inset 0 1px 3px rgba(0,0,0,.2);background:-webkit-linear-gradient(#f0f0f0,#bebebe);border:1px solid #808080;text-shadow:0 1px 0 rgba(255,255,255,.25)}input[type='radio']:checked::before{-webkit-box-shadow:0 1px 0 rgba(255,255,255,.5);-webkit-margin-start:4px;background:#808080;border-radius:10px;content:'';display:inline-block;font-size:13px;font-weight:400;height:5px;left:0;margin-top:4px;opacity:1;position:absolute;top:0;vertical-align:top;width:5px}html[dir='rtl'] input[type='radio']:checked::before{right:0}input[type='radio']:active:checked::before{background:#606060}.checkbox,.radio{margin:9px 0}.checkbox label,.radio label{display:-webkit-inline-box}.checkbox label input ~ span,.radio label input ~ span{-webkit-box-flex:1;-webkit-margin-start:.4em;display:block}.checkbox label input[type=checkbox],.radio label input[type=radio]{margin-top:0;top:0;vertical-align:top}input[type='checkbox']:not(.custom-appearance):focus,input[type='radio']:not(.custom-appearance):focus{-webkit-box-shadow:inset 0 1px 2px white,0 1px 2px rgba(0,0,0,.2),0 0 1px #c0c0c0,0 0 1px #c0c0c0,0 0 1px #c0c0c0;-webkit-transition:border-color 200ms;border-color:#4080fa;outline:0}label>input[type=radio] ~ span,label>input[type=checkbox] ~ span,input[type=checkbox] ~ label{color:#444}label:hover>input[type=checkbox]:disabled ~ span,label:hover>input[type=radio]:disabled ~ span,input[type=checkbox]:disabled ~ label:hover{color:#888}label:hover>input[type=checkbox]:not(:disabled) ~ span,label:hover>input[type=radio]:not(:disabled) ~ span,input[type=checkbox]:not(:disabled) ~ label:hover{color:#222}
select{-webkit-appearance:button;-webkit-border-radius:3px;-webkit-box-shadow:0 1px 3px rgba(0,0,0,0.1);-webkit-padding-end:20px;-webkit-padding-start:8px;-webkit-user-select:none;background-image:url(select.png),-webkit-linear-gradient(#fafafa,#f4f4f4 40%,#e5e5e5);background-position:center right;background-repeat:no-repeat;border:1px solid #aaa;color:#555;font-size:inherit;margin:0;padding-top:2px;padding-bottom:2px;text-overflow:ellipsis;white-space:nowrap}html[dir='rtl'] select{background-position:center left}select:disabled{cursor:not-allowed;color:graytext;background-image:url(disabled_select.png),-webkit-linear-gradient(#fefefe,#f8f8f8 40%,#e9e9e9)}select:enabled:hover{-webkit-box-shadow:0 1px 3px rgba(0,0,0,0.2);background-image:url(select.png),-webkit-linear-gradient(#fefefe,#f8f8f8 40%,#e9e9e9);color:#333}select:enabled:active{-webkit-box-shadow:inset 0 1px 3px rgba(0,0,0,0.2);background-image:url(select.png),-webkit-linear-gradient(#f4f4f4,#efefef 40%,#dcdcdc);color:#444}