.cover-image img {
    width: 100%;
    max-height: 700px;
}

.thehero {
    background: url('/Public/index/resource/footer_bg.png') no-repeat;
}

#MECHAT-PCBTN {
    font-family: "Helvetica Neue", Helvetica, "Microsoft Yahei", Arial, sans-serif;
    font-size: 16px;
    line-height: 24px;
    position: fixed;
    bottom: -100%;
    background: #1abc9c;
    color: #fff;
    text-align: center;
    padding: 10px 15px 8px;
    border-top-left-radius: 5px;
    border-top-right-radius: 5px;
    cursor: pointer;
    z-index: 2147483645;
}

#MECHAT-PCBTN span {
    display: inline-block;
    height: 24px;
    padding: 0 0 0 34px;
    background: url("//meiqia.com/images/pc_btn_icon.png") 0 0 no-repeat
}

#MECHAT-LAYOUT {
    position: fixed;
    right: 80px;
    bottom: -100%;
    width: 300px;
    height: 430px;
    z-index: 2147483647;
    overflow: hidden;
    background: #fff;
    border: 1px solid #1abc9c;
    border-top-left-radius: 5px;
    border-top-right-radius: 5px;
    box-shadow: 0 0 3px 2px rgba(135, 135, 135, 0.1)
}

#MECHAT-PCBTN, #MECHAT-LAYOUT {
    _position: absolute;
    _bottom: auto;
    _top: expression(eval(document.documentElement.scrollTop+document.documentElement.clientHeight-this.offsetHeight-(parseInt(this.currentStyle.marginTop,10)||0)-(parseInt(this.currentStyle.marginBottom,10)||0)))
}
#yddContainer {
        display: block;
        font-family: Microsoft YaHei;
        position: relative;
        width: 100%;
        height: 100%;
        top: -4px;
        left: -4px;
        font-size: 12px;
        border: 1px solid
    }

    #yddTop {
        display: block;
        height: 22px
    }

    #yddTopBorderlr {
        display: block;
        position: static;
        height: 17px;
        padding: 2px 28px;
        line-height: 17px;
        font-size: 12px;
        color: #5079bb;
        font-weight: bold;
        border-style: none solid;
        border-width: 1px
    }

    #yddTopBorderlr .ydd-sp {
        position: absolute;
        top: 2px;
        height: 0;
        overflow: hidden
    }

    .ydd-icon {
        left: 5px;
        width: 17px;
        padding: 0px 0px 0px 0px;
        padding-top: 17px;
        background-position: -16px -44px
    }

    .ydd-close {
        right: 5px;
        width: 16px;
        padding-top: 16px;
        background-position: left -44px
    }

    #yddKeyTitle {
        float: left;
        text-decoration: none
    }

    #yddMiddle {
        display: block;
        margin-bottom: 10px
    }

    .ydd-tabs {
        display: block;
        margin: 5px 0;
        padding: 0 5px;
        height: 18px;
        border-bottom: 1px solid
    }

    .ydd-tab {
        display: block;
        float: left;
        height: 18px;
        margin: 0 5px -1px 0;
        padding: 0 4px;
        line-height: 18px;
        border: 1px solid;
        border-bottom: none
    }

    .ydd-trans-container {
        display: block;
        line-height: 160%
    }

    .ydd-trans-container a {
        text-decoration: none;
    }

    #yddBottom {
        position: absolute;
        bottom: 0;
        left: 0;
        width: 100%;
        height: 22px;
        line-height: 22px;
        overflow: hidden;
        background-position: left -22px
    }

    .ydd-padding010 {
        padding: 0 10px
    }

    #yddWrapper {
        color: #252525;
        z-index: 10001;
        background: url(chrome-extension://ibogfemlnclpecapkojhmanpiebldbnk/ab20.png);
    }

    #yddContainer {
        background: #fff;
        border-color: #4b7598
    }

    #yddTopBorderlr {
        border-color: #f0f8fc
    }

    #yddWrapper .ydd-sp {
        background-image: url(chrome-extension://ibogfemlnclpecapkojhmanpiebldbnk/ydd-sprite.png)
    }

    #yddWrapper a, #yddWrapper a:hover, #yddWrapper a:visited {
        color: #50799b
    }

    #yddWrapper .ydd-tabs {
        color: #959595
    }

    .ydd-tabs, .ydd-tab {
        background: #fff;
        border-color: #d5e7f3
    }

    #yddBottom {
        color: #363636
    }

    #yddWrapper {
        min-width: 250px;
        max-width: 400px;
    }
    .teacheng {
        font-size: 18px !important;
    }
    .list-unstyled{
        margin-bottom: 0;
    }
    .list-unstyled li{
        float: none !important;
        display: inline-block;
    }
@media screen and (max-width: 768px) {
    body.index .subject-index {
        display: none;
    }
    .m-subject-index nav{
        text-align: center;
        margin: 15px;
        display: -webkit-flex;
        display: -moz-flex;
        display: -ms-flex;
        display: flex;
        -webkit-justify-content: space-around;
        -ms-flex-pack: distribute;
        justify-content: space-around;
    }
    .m-subject-index a {
        width: 20%;
        padding-top: 19%;
        height: 0;
        border: 1px solid #999;
        border-radius: 50%;
        overflow: hidden;
        display: inline-block;
        position: relative;
    }
    .m-subject-index a:after {
        display: block;
        position: absolute;
        content: attr(lesson);
        width: 50%;
        left: 50%;
        top: 50%;
        z-index: 1;
        -webkit-transform: translate(-50%, -50%);
        -ms-transform: translate(-50%, -50%);
        transform: translate(-50%, -50%);
        color: #999;
    }
}