10、H5响应式布局

HTML源码：

css源码：

    * {
        margin: 0px;
        padding: 0px;
    }

    .heading,
    .container,
    .footing {
        margin: 10px auto;
    }

    .heading {
        height: 100px;
        background-color: chocolate;
    }

    .left,
    .main,
    .right {
        background-color: cyan;
    }

    .footing {
        height: 100px;
        background-color: gray;
    }

    @media only screen and (min-width: 960px) {
        .heading,
        .container,
        .footing {
            width: 960px;
        }

        .left,
        .main,
        .right {
            float: left;
            height: 500px;
        }

        .left,
        .right {
            width: 200px;
        }

        .main {
            margin: 0px 5px;
            width: 550px;
        }

        .container {
            height: 500px;
        }
    }

    @media only screen and (min-width: 600px) and (max-width: 960px) {
        .heading,
        .container,
        .footing {
            width: 600px;
        }

        .left,
        .main {
            float: left;
            height: 400px;
        }

        .left {
            width: 160px;
        }

        .right {
            display: none;
        }

        .main {
            margin-left: 5px;
            width: 435px;
        }

        .container {
            height: 400px;
        }
    }

    @media only screen and (max-width: 600px) {
        .heading,
        .container,
        .footing {
            width: 400px;
        }

        .left,
        .right {
            width: 400px;
            height: 100px;
        }

        .main {
            margin-top: 10px;
            width: 400px;
            height: 200px;
        }

        .right {
            margin-top: 10px;
        }

        .container {
            height: 420px;
        }
    }