css 是层叠样式表(英文全称:Cascading Style Sheets)是一种用来表现HTML(标准通用标记语言的一个应用)或XML(标准通用标记语言的一个子集)等文件样式的计算机语言。CSS不仅可以静态地修饰网页,还可以配合各种脚本语言动态地对网页各元素进行格式化。CSS 能够对网页中元素位置的排版进行像素级精确控制,支持几乎所有的字体字号样式,拥有对网页对象和模型样式编辑的能力。
下面就几个小案例来教大家如何用css绘制一些图形:
<style> #triangle { width: 0; border-style: solid; border-width: 50px 50px 50px 50px; border-color: red blue orange gray; }</style><div id="triangle"></div>
效果如图:
<style> #triangle2 { width: 0; border-style: solid; border-width: 50px 50px 50px 50px; border-color: red red grey grey; }</style><div id="triangle2"></div>
效果如图:
<style> #triangle3 { width: 0; border-top: 60px solid transparent; border-right: 100px solid transparent; border-bottom: 80px solid red; }</style><div id="triangle3"></div>
效果如图:
<style> #triangle4 { width: 0; border-left: 50px solid transparent; border-right: 50px solid transparent; border-bottom: 100px solid red; }</style><div id="triangle4"></div>
效果如图:
绘制心形
<style> #heart { float: left; width: 100px; height: 90px; position: relative; } #heart:before,#heart:after { position: absolute; top: 0; content: ''; width: 50px; height: 80px; background: red; border-radius: 25px 25px 0 0; } #heart:before { left: 14px; transform: rotate(-45deg); } #heart:after { left: 36px; transform: rotate(45deg); }</style><div id="heart"></div>
效果如图:
绘制箭头
<style> #arrow { margin-top: 105px; float: left; width: 0; border-left: 30px solid transparent; border-right: 30px solid transparent; border-top: 60px solid red; position: relative; } #arrow:before,#arrow:after { position: absolute; content: ''; } #arrow:before { border-left: 30px solid transparent; border-right: 30px solid transparent; border-top: 20px solid #fff; left: -30px; top: -61px; } #arrow:after { height: 120px; border-left: 2px solid red; border-right: 2px solid red; left: -2px; top: -161px; }</style><div id="arrow"></div>
效果如图:
绘制五角星
<style> #star-five { margin: 75px 0 55px 0; float: left; width: 0; height: 0; border-top: 66px solid red; border-left: 100px solid transparent; border-right: 100px solid transparent; position: relative; } #star-five:before,#star-five:after { position: absolute; content: ''; border-top: 66px solid red; border-left: 100px solid transparent; border-right: 100px solid transparent; top: -66px; left: -100px; } #star-five:before { transform: rotate(-72deg); } #star-five:after { transform: rotate(72deg); }</style><div id="star-five"></div>
效果如图:
绘制冒泡框/提示框
<style> #prompt { float: left; width: 200px; height: 100px; margin: 20px 0 40px; border-radius: 20px; background: #669; position: relative; } #prompt:after { position: absolute; content: ""; width: 50px; height: 120px; border: 0 solid transparent; border-right: 30px solid #669; border-radius: 0 0 50px 0; top: 0; left: 0; }</style><div id="prompt"></div>
效果如图:
绘制气球
<style> #balloon { float: left; width: 160px; height: 160px; background: #faf9f9; border-radius: 160px 160px 64px 160px; transform: rotate(45deg); box-shadow: 0 0 100px 0 rgba(243,98,122,1) inset, 20px 20px 20px rgba(243,98,122,0.3); position: relative; } #balloon:after { position: absolute; content: ''; border: 8px solid transparent; border-right-color: rgba(243,98,122,0.88); transform: rotate(45deg); border-radius: 16px; bottom: -2px; right: -2px; }</style><div id="balloon"></div>
效果如图:
绘制阴阳八卦
<style> #yin-yang { float: left; width: 48px; height: 96px; background-color: #fff; border-style: solid; border-color: #000; border-width: 2px 50px 2px 2px; border-radius: 50%; -webkit-animation: Rotate 6s linear infinite; /*旋转*/ position: relative; } #yin-yang:before,#yin-yang:after { position: absolute; content: ''; } #yin-yang:before { width: 12px; height: 12px; background: #fff; border: 18px solid #000; border-radius: 50%; top: 0; left: 50%; } #yin-yang:after { width: 12px; height: 12px; background: #000; border: 18px solid #fff; border-radius: 50%; top: 50%; left: 50%; } @-webkit-keyframes Rotate { 0%{transform: rotate(360deg)} 100%{transform: rotate(0deg)} } @keyframes Rotate { 0%{transform: rotate(360deg)} 100%{transform: rotate(0deg)} }</style><div id="yin-yang"></div>
效果如图:
CSS为HTML标记语言提供了一种样式描述,定义了其中元素的显示方式。CSS在Web设计领域是一个突破。利用它可以实现修改一个小的样式更新与之相关的所有页面元素。看到上面绘制的小图形,是不是绝得很神奇?这些教程很简单很适合初学者来学习哦。
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