.box-main {
    margin: 10px auto;
    padding: 50px 40px;
    width: 1080px;
    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;
}

#myOperaArea {
    float: right;
    margin: 30px 0 0 0;
    padding: 0;
    width: 420px;
    border: solid 0 red;
    font-size: 15px;
    color: #444;
}

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

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

        #myOperaArea p span {
            color: dodgerblue;
        }

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

    #myOperaArea textarea {
        margin: 0;
        padding: 5px;
        width: 98%;
        height: 100px;
        font-size: 14px;
        line-height: 22px;
        color: #000;
        background-color: transparent;
    }

    #myOperaArea li {
        list-style: decimal;
        margin-bottom: 7px;
    }

#myScreenShotArea {
    float: left;
    margin: 0;
    padding: 0;
    width: 540px; /*背景图的高度和宽度*/
    height: 1080px;
    overflow: hidden;
    font-size: 18px;
    font-weight: bold;
    line-height: normal;
    letter-spacing: 1px;
}

    #myScreenShotArea > div {
        display: flex;
        justify-content: center;
        align-items: center;
        text-align: center;
        border-bottom: solid 0px #ccc;
        /* --默认展馆、时间的字体-- */
        font-size: 21px;
        color: #2C2C2C;
        font-weight:normal;
    }

    #myScreenShotArea h2 {
        font-size: 42px;
        font-weight: bold;
        line-height: 60px;
        color: #2C2C2C;
        letter-spacing: 5px;
    }
    #myScreenShotArea h2 span{
        letter-spacing: 1px;
    }

    #myScreenShotArea h3 {
        /* 子展的版面为：同期展会（原主展的版面为：子标题） */
        font-size: 20px;
        color: #2C2C2C;
        font-weight: normal;
    }

    #myScreenShotArea h4 {
        font-size: 29px;
        color: #404040;
    }

    #myScreenShotArea h5 {
        font-size: 23px;
        color: #218795;
    }

    /* 参展产品 */
#myExhibits {
    height: 155px;
    padding: 20px 35px 0 35px;
    line-height: 30px;
    font-size: 18px;
    font-weight: normal;
    color: #333
}

    /* 观众报名二维码、展会公众号二维码区域 */
    #myScreenShotArea ul {
        margin: 35px auto 0 auto;
        padding: 0 0 0 15px;
        width: 100%;
        display: inline-block;
        background-color: transparent;
    }

        #myScreenShotArea ul li {
            float: left;
            width: 180px;
            margin: 0 0 0 50px;
            padding: 0;
            list-style: none;
            text-align: center;
            font-size: 18px;
            font-weight: normal;
            color: #fff;
        }

            #myScreenShotArea ul li div {
                width: 180px;
                height: 180px;
                margin-bottom: 5px;
            }

                #myScreenShotArea ul li div img {
                    max-width: 180px;
                    max-height: 180px;
                }

            #myScreenShotArea ul li:last-child div img {
                border: solid 12px #fff;
            }

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

    #myScreenShotArea {
        float: none;
    }

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