轮播图+懒加载+顶定固定菜单

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<head>
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    <title></title>
    <style>
        body {
            margin: 0;
            padding: 0;
            font: 1rem "micro-soft Yahei";
        }

        a {
            text-decoration: none;
        }

        ul {
            margin: 0;
            padding: 0;
            list-style: none;
        }

        .play-box {
            position: relative;
            width: 865px;
            height: 535px;
            border: 1px solid #ccc;
            border-top-left-radius: 5px;
            border-bottom-left-radius: 5px;
            border-right: none;
        }

            .play-box a {
                opacity: 0;
                height: 0;
                overflow: hidden;
                display: block;
                transition: opacity 1s;
            }

                .play-box a span {
                    position: absolute;
                    font-size: 1.5rem;
                    color: bisque;
                    opacity: 0.6;
                    padding-left: 20px;
                    padding-top: 20px;
                }

                .play-box a.current {
                    opacity: 1;
                    height: auto;
                }

            .play-box img {
                width: 865px;
                height: 535px;
                border: 0;
                border-top-left-radius: 5px;
                border-bottom-left-radius: 5px;
            }

        #iconList {
            position: absolute;
            left: 50%;
            bottom: 10px;
            margin-left: -45px;
        }

            #iconList li {
                float: left;
                margin: 0 4px;
                width: 10px;
                height: 10px;
                border-radius: 50%;
                font-size: 0;
                background-color: #fff;
                cursor: pointer;
            }

                #iconList li.current {
                    background: linear-gradient(to bottom, #f8f8f8 0,lawngreen 80%);
                }

        .slidebar {
            position: absolute;
            display: none;
            top: 50%;
            margin-top: -35px;
            width: 30px;
            height: 50px;
            color: #fff;
            text-align: center;
            line-height: 50px;
            background-color: #000;
            opacity: .6;
            cursor: pointer;
            font-family: simsun;
        }

        .slidebar_left {
            left: 0;
        }

        .slidebar_right {
            right: 0;
        }

        #imgContent, #materials {
            display: flex;
            justify-content: center;
            margin: 60px auto;
            color: #666;
        }


        #title {
            height: auto;
            width: 535px;
            text-align: left;
            padding-left: 20px;
            border: 1px solid #ccc;
            border-bottom-right-radius: 5px;
            border-top-right-radius: 5px;
            border-left: none;
        }

            #title ul {
                display: flex;
                flex-direction: column;
                justify-content: space-around;
                height: 100%;
            }

                #title ul li a {
                    text-decoration: none;
                }

                #title ul li.current {
                    padding-left: 18px;
                    color: #000;
                    text-decoration: underline #fefce6 dashed;
                    background: url(/images/arrow_blue_right.png) left no-repeat;
                }

        h2 {
            padding: 0;
            margin: 0;
        }

        h3 {
            padding: 0;
            margin: 0;
            font-weight: normal;
        }

        hr {
            color: #ccc;
        }

        #category {
            font-size: 1.2rem;
        }

        .footer {
            text-align: right;
            margin-top: 20px;
            margin-right: 200px;
            color: navy;
            height: 50px;
            bottom: 30px;
            right: 20px;
            margin-bottom: -80px;
        }

            .footer img {
                vertical-align: middle;
                padding-right: 10px;
                height: 30px;
            }

        #materials {
            width: 1400px;
            justify-content: left;
            padding-left: 10px;
        }

        .wrap {
            min-height: 100%;
        }

        #top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            position: fixed;
            width: 100%;
            z-index: 1;
            background: linear-gradient(to bottom,#f8f8f8 0,#ccc 100%);
            height: 45px;
            top: 0;
            border-bottom: #aaa solid 2px;
            margin-bottom: 5px;
            box-shadow: 2px 2px 4px 2px #bbb, -5px 5px 5px 5px #fff;
        }

        #home {
            background: url(/images/home.png) left no-repeat;
            padding:0 50px;
            
        }

        #materials ul {
            width: 100%;
            display: flex;
            flex-direction: column;
        }

            #materials ul li {
                margin: 10px 0 0 -10px;
                display: inline-block;
                background: none;
                padding-left: 10px;
                border-bottom: 1px solid #ccc;
                padding-bottom: 5px;
            }

                #materials ul li:hover {
                    background: linear-gradient(to bottom, #f8f8f8 0,#fefce6 100%) !important;
                    border: 1px solid #ccc;
                    border-radius: 5px;
                    cursor: pointer;
                    color: #333;
                }

                #materials ul li a {
                    width: 100%;
                    display: block;
                    color: #666;
                    text-decoration: none;
                }

                    #materials ul li a:hover {
                        text-decoration: underline blue dashed;
                        color: #111;
                        padding-left: 5px;
                    }

        #web {
            display: flex;
            justify-content: space-around;
            align-items: center;
            width: 300px;
            padding: 0 50px;
        }
    </style>
</head>
<body>
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            <div id="web">
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        <div id="imgContent">
            <div id="playBox" class="play-box">
                <div id="imgList">
                    <a href="#" class="current">
                        <span>a</span>
                        <img src="/images/test/1.jpg">
                    </a>
                    <a href="#">
                        <span>b</span>
                        <img src="/images/test/2.jpg">
                    </a>
                    <a href="#">
                        <span>c</span>
                        <img src="/images/test/3.jpg">
                    </a>
                    <a href="#">
                        <span>d</span>
                        <img src="/images/test/4.jpg">
                    </a>
                    <a href="#">
                        <span>e</span>
                        <img src="/images/test/5.jpg">
                    </a>
                    <a href="#">
                        <span>f</span>
                        <img src="/images/test/6.jpg">
                    </a>
                </div>
                <div id="iconList">
                    <ul>
                        <li class="current">1</li>
                        <li>2</li>
                        <li>3</li>
                        <li>4</li>
                        <li>5</li>
                        <li>6</li>
                    </ul>
                </div>
                <div class="slidebar slidebar_left"><</div>
                <div class="slidebar slidebar_right">></div>
            </div>
            <div id="title">
                <ul>
                    <li class="current">
                        <a href="" target="_blank">
                            <h2>1111111111111</h2>
                            <h3>1111111111</h3>
                        </a>
                    </li>
                    <li>
                        <a href="" target="_blank">
                            <h2>2222222222222</h2>
                            <h3>2222222222222222</h3>
                        </a>
                    </li>
                    <li>
                        <a href="" target="_blank">

                            <h2>333333333333333333</h2>
                            <h3>3333333333</h3>
                        </a>
                    </li>
                    <li>
                        <a href="" target="_blank">
                            <h2>4444444444444</h2>
                            <h3>4444444444</h3>
                        </a>

                    </li>
                    <li>
                        <a href="" target="_blank">
                            <h2>5555555555555</h2>
                            <h3>555555555555</h3>
                        </a>

                    </li>
                    <li>
                        <a href="" target="_blank">
                            <h2>66666666</h2>
                            <h3>66666</h3>
                        </a>

                    </li>
                </ul>
            </div>
        </div>

        <div id="materials">
            <ul>
                <li>
                    <a href="">
                        <h2>1</h2>
                        <h3>1</h3>
                    </a>
                </li>
                <li>
                    <a href="">
                        <h2>2</h2>
                        <h3>2</h3>
                    </a>
                </li>
                <li>
                    <a href="">
                        <h2>3</h2>
                        <h3>3</h3>
                    </a>
                </li>
                <li>
                    <a href="">
                        <h2>4</h2>
                        <h3>4</h3>
                    </a>
                </li>
                <li>
                    <a href="">
                        <h2>5</h2>
                        <h3>5</h3>
                    </a>
                </li>
                <li>
                    <a href="">
                        <h2>6</h2>
                        <h3>6</h3>
                    </a>
                </li>
                <li>
                    <a href="">
                        <h2>7</h2>
                        <h3>7</h3>
                    </a>
                </li>
                <li>
                    <a href="">
                        <h2>8</h2>
                        <h3>8</h3>
                    </a>
                </li>
                <li>
                    <a href="">
                        <h2>9</h2>
                        <h3>9</h3>
                    </a>
                </li>
                <li>
                    <a href="">
                        <h2>10</h2>
                        <h3>10</h3>
                    </a>
                </li>
            </ul>
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原文地址:https://www.cnblogs.com/rovedog/p/13232241.html