一、简介

我们制作网页的时候，可以将一些较小的图片制作成一张图集，以便于优化我们的性能。

二、简单案例

Html-精灵图_css3

 

<!DOCTYPE html>
<html lang="cn">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>精灵图案例</title>

    <style>
        * {
            padding: 0;
            margin: 0;
        }

        .zodiacs {
            width: 267px;
            height: 276px;
            background: url(https://csdnres.oss-cn-beijing.aliyuncs.com/Images/zodiacs.jpeg);
            float: left;
            margin: 10px;
        }

        .rat {
            background-position: 0px 0px;
        }

        .ox {
            background-position: -292px 0px;
        }

        .liger {
            background-position: -581px 0px;
        }

        .rabbit {
            background-position: 0px -306px;
        }

        .dragon {
            background-position: -292px -306px;
        }

        .snake {
            background-position: -581px -306px;
        }


        .horse {
            background-position: 0px -617px;
        }

        .goat {
            background-position: -292px -617px;
        }

        .mokey {
            background-position: -581px -617px;
        }

        .rooster {
            background-position: 0px -926px;
        }

        .dog {
            background-position: -292px -926px;
        }

        .boar {
            background-position: -581px -926px;
        }
    </style>

</head>

<body>

    <div class="zodiacs rat"></div>
    <div class="zodiacs ox"></div>
    <div class="zodiacs liger"></div>

    <div class="zodiacs rabbit"></div>
    <div class="zodiacs dragon"></div>
    <div class="zodiacs snake"></div>

    <div class="zodiacs horse"></div>
    <div class="zodiacs goat"></div>
    <div class="zodiacs mokey"></div>

    <div class="zodiacs rooster"></div>
    <div class="zodiacs dog"></div>
    <div class="zodiacs boar"></div>

</body>

</html>