很实用的CSS的代码片段方法教程

本篇内容介绍了"很实用的CSS的代码片段方法教程"的有关知识，在实际案例的操作过程中，不少人都会遇到这样的困境，接下来就让小编带领大家学习一下如何处理这些情况吧！希望大家仔细阅读，能够学有所成！

CSS重置

这是CSS浏览器重置的基本和常见的CSS代码段

html, body, div, span, applet, object, iframe, h2, h3, h4, h5, h6, h7, p, blockquote, pre, a, abbr, acronym, address, big, cite, code, del, dfn, em, img, ins, kbd, q, s, samp, small, strike, strong, sub, sup, tt, var, b, u, i, center, dl, dt, dd, ol, ul, li, fieldset, form, label, legend, table, caption, tbody, tfoot, thead, tr, th, td, article, aside, canvas, details, embed, figure, figcaption, footer, header, hgroup, menu, nav, output, ruby, section, summary, time, mark, audio, video {      margin: 0;      padding: 0;      border: 0;      font-size: 100%;      font: inherit;      vertical-align: baseline;      outline: none;      -webkit-box-sizing: border-box;      -moz-box-sizing: border-box;      box-sizing: border-box; }  html {      height: 101%; }  body {      font-size: 62.5%;      line-height: 1;      font-family: Arial, Tahoma, sans-serif; }  article, aside, details, figcaption, figure, footer, header, hgroup, menu, nav, section {      display: block; }  ol, ul {      list-style: none; }  blockquote, q {      quotes: none; }  blockquote:before, blockquote:after, q:before, q:after {      content: '';      content: none; }  strong {      font-weight: bold; }  table {      border-collapse: collapse;      border-spacing: 0; }  img {      border: 0;      max-width: 100%; }  p {      font-size: 1.2em;      line-height: 1.0em;      color: #333; }

跨浏览器透明度设置

.transparent {          -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=50)";/* IE 8 */          filter: alpha(opacity=50); /* IE 5-7 */          -moz-opacity: 0.5;/* Netscape */          -khtml-opacity: 0.5; /* Safari 1.x */         opacity: 0.5;  /* Good browsers */ }

常规媒体查询

/* Smartphones (portrait and landscape) ----------- */  @media only screen and (min-device-width : 320px) and (max-device-width : 480px) {     } /* Smartphones (landscape) ----------- */  @media only screen and (min-width : 321px) {     } /* Smartphones (portrait) ----------- */  @media only screen and (max-width : 320px) {      } /* iPads (portrait and landscape) ----------- */  @media only screen and (min-device-width : 768px) and (max-device-width : 1024px) {      } /* iPads (landscape) ----------- */  @media only screen and (min-device-width : 768px) and (max-device-width : 1024px) and (orientation : landscape) {      } /* iPads (portrait) ----------- */  @media only screen and (min-device-width : 768px) and (max-device-width : 1024px) and (orientation : portrait) {      } /* Desktops and laptops ----------- */  @media only screen and (min-width : 1224px) {     } /* Large screens ----------- */  @media only screen and (min-width : 1824px) {      } /* iPhone 4 ----------- */  @media only screen and (-webkit-min-device-pixel-ratio:1.5), only screen and (min-device-pixel-ratio:1.5) {     }

自定义选中文本

::selection {      background: #51a351; }  ::-moz-selection {      background: #51a351; }  ::-webkit-selection {      background: #51a351; }

带CSS3的全屏背景

html {      background: url('images/bg.jpg') no-repeat center center fixed;      -webkit-background-size: cover;      -moz-background-size: cover;      -o-background-size: cover;      background-size: cover; }

强制垂直滚动条

html {      height: 101%  }

文本首字母大写

p:first-letter {      display: block;      margin: 4px 0 0 4px;      float: left;      color: #ff3366;      font-size: 5.3em;      font-family: Georgia, Times New Roman, serif; }

内外阴影

#mydiv {      -moz-box-shadow: inset 2px 0 4px #000;      -webkit-box-shadow: inset 2px 0 4px #000;      box-shadow: inset 2px 0 4px #000; }

#mydiv {      -webkit-box-shadow: 0 2px 2px -2px rgba(0, 0, 0, 0.52);      -moz-box-shadow: 0 2px 2px -2px rgba(0, 0, 0, 0.52);      box-shadow: 0 2px 2px -2px rgba(0, 0, 0, 0.52); }

语音气泡

.speech-bubble {     position: relative;     background: #00aabb;     border-radius: .4em; }   .speech-bubble:after {     content: '';     position: absolute;     bottom: 0;     left: 50%;     width: 0;     height: 0;     border: 30px solid transparent;     border-top-color: #00aabb;     border-bottom: 0;     border-left: 0;     margin-left: -15px;     margin-bottom: -30px; }

自定义输入样式

input[type=text], textarea {      -webkit-transition: all 0.30s ease-in-out;      -moz-transition: all 0.30s ease-in-out;      -ms-transition: all 0.30s ease-in-out;      -o-transition: all 0.30s ease-in-out;      outline: none;      padding: 3px 0px 3px 3px;      margin: 5px 1px 3px 0px;      border: 1px solid #ddd; }  input[type=text]:focus, textarea:focus {      box-shadow: 0 0 5px rgba(81, 203, 238, 1);      padding: 3px 0px 3px 3px;      margin: 5px 1px 3px 0px;      border: 1px solid rgba(81, 203, 238, 1); }

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