• border


    1.border-不支持百分比值

    支持下面属性值:

    thin:1px

    medium:3px

    thick:5px

    2.border-style类型

    solid:实线

    dashed:虚线(方形) 兼容性问题

    dotted:点线(圆点)

    double:双线(双线宽度一定相同,中间区域+-1

    inset:内凹(淘汰)

    3.border-color和color(border-color的默认颜色是color)

    案例:hover与图形变色

    .add{
    color:#ccc;
    transition:clor .25s;
    border:1 px solid}
    .add:hover{
    color:#06C;
    }

     4.border与background定位的局限

    background定位的局限:只能相对于左上角

    background-position{
    left:50px;
    40px;
    }

    相对于右上角?借助border

    border-right{
    50px solid transparent;
    background-position:100% 40px;
    }

    5.画三角形

    <!DOCTYPE html>
    <html>
    <head lang="en">
        <meta charset="UTF-8">
        <title></title>
        <style>
          #triangle{
              width:100px;
              height: 100px;
              border: 100px solid;
              border-color: red green blue orange;
          }
        </style>
    </head>
    <body>
    <div id="triangle">
    
        </div>
    </div>
    </body>
    </html>

     

    <!DOCTYPE html>
    <html>
    <head lang="en">
        <meta charset="UTF-8">
        <title></title>
        <style>
          #triangle{
              width:0px;
              height: 0px;
              border: 100px solid;
              border-color: red green blue orange;
          }
    
        </style>
    </head>
    <body>
    <div id="triangle">
    
        </div>
    </div>
    </body>
    </html>

     

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  • 原文地址:https://www.cnblogs.com/Yimi/p/6083742.html
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