.box-main {
    margin: 10px auto;
    padding: 50px 40px;
    width: 1620px;
    background-color: #EEF3FA;
}
.menu-float-left, menu-float-right {
    display:none;
}

h1 {
    font-size: 25px;
    font-weight: normal;
    color: #444;
    padding-bottom: 3px;
    border-bottom: solid 1px #ccc;
    margin-bottom: 10px;
}

/* 操作区域 */
#idOperaArea {
    float: right;
    margin: 0;
    padding: 0;
    width: 420px;
    border: solid 0 red;
    font-size: 15px;
    color: #444;
}

    #idOperaArea button {
        min-width: 60px;
        padding: 2px 5px;
    }

    #idOperaArea p {
        margin: 15px auto 10px auto;
        line-height: 25px;
        height: auto;
    }

        #idOperaArea p span {
            color: dodgerblue;
        }

    #idOperaArea input {
        margin: 0;
        padding: 0 0 0 3px;
        font-size: 14px;
        height: 25px;
        width: 100%;
    }

/* 截图区域 */
#idScreenShotArea {
    position: relative;
    float: left;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background: url(images/bg/iwe.jpg) no-repeat top center;
    width: 1080px; /*背景图的高度和宽度*/
    height: 2036px;
}

*#idScreenShotArea * {
    margin: 0;
    padding: 0;
    width: 100%;
    display: inline-block;
    font-weight: bold;
    color: #000;
    line-height: normal;
    text-align: center;
    letter-spacing: 2px;
}        
/* 垂直及水平居中 */
    /* #idScreenShotArea > div {
        display: flex;
        justify-content: center;
        align-items: center;
        text-align: center;
    }*/

/* 同期展会 */
#idScreenShotArea > p {
    position: absolute;
    left: 345px;
    top: 104px;
    font-size: 34px;
    font-weight: normal;
    letter-spacing: 1px;
    text-align: left;
}

    /* 展会标题 */
#idScreenShotArea > h2 {
    position: absolute;
    left: 0;
    top: 375px;
    font-size: 75px;
    letter-spacing: 9px;
}
    #idScreenShotArea > h2 span {
        letter-spacing: 9px;
    }

    /* 展商名称 */
    #idScreenShotArea > h3 {
        position: absolute;
        left: 0;
        top: 870px;
        height: 100px;
        line-height: 100px;
        font-size: 66px;
    }
    /* 展位号 */
    #idScreenShotArea > h4 {
        position: absolute;
        left: 0;
        top: 995px;
        height:auto;
        font-size: 40px;
        font-weight: normal;
        color: #427E25;
    }
        #idScreenShotArea > h4 span {
            color: #fff;
            background-color: #1E96D5;
            padding: 2px 40px 9px 40px;
            border-radius: 35px;
            width: auto;
            font-weight: normal;
        }

    /* 展会时间、展会地址 */
    #idScreenShotArea > div {
        position: absolute;
        left: 0;
        top: 1090px;
        height: 400px;
        width:100%;
        text-align:center;
    }
        #idScreenShotArea > div h5 {
            margin: 30px auto 0 auto;
            height: 70px;
            line-height: 70px;
            width: 100%;
            font-size: 42px;
            font-weight: bold;
        }

        #idScreenShotArea > div p {
            margin: 0 auto;
            height: 60px;
            line-height: 60px;
            width: 100%;
            font-size: 38px;
            font-weight: normal;
        }

    /* 2个二维码图片 */
    #idScreenShotArea ul {
        position: absolute;
        left: 0;
        top: 1645px;
        height: 300px;
        margin: 0 auto;
        padding:0 120px;
        font-size: 28px;
        color: #fff;
        font-weight: normal;
    }
    #idScreenShotArea ul li{
        float:left;
        width:50%;
    }
    #idScreenShotArea ul li img{
        width:260px;
        height:260px;
    }
        #idScreenShotArea ul li p {
            margin-top:5px;
            color: #fff;
            font-size: 30px;
            font-weight: normal;
        }

@media only screen and (max-width: 840px) {
    .box-main {
        margin: 0 auto;
        padding: 0;
        width: 100%;
        background-color: #fff;
    }

    #idScreenShotArea {
        float: none;
    }

    #idOperaArea {
        float: none;
        width: 100%;
        padding: 5px 5px 50px 5px;
    }

        #idOperaArea > p:first-child, #idOperaArea > div:nth-child(2) {
            display:none;
        }
}