$shadow:0 4px 1px 0 #e3f3fc;
$radius:10px;
span,p,li,div{
    user-select: none;
    padding: 0;
    margin: 0;
}
video,audio{
    outline: none;
}
.boxStyle{
    border-radius: $radius;
    box-shadow: $shadow;
    background-color: #fff;
}
a{
    text-decoration: none;
    color: #fff;
}
.flexRowBetween{
    display: flex;
    flex-direction: row;
    justify-content: space-between;
}
.mask {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    margin: auto;
    background-color: rgba(0, 0, 0, 0.7);
}
.course {
    position: fixed;
    z-index: 999;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}
.dialog {
    color: #3f3f3f;
    position: absolute;
    background-color: #f8f8f8;
    background-repeat: no-repeat;
    background-origin: top left;
    background-size: 100% auto;
    border-radius: 32px;
    z-index: 2;
    top: 10px;
    left: 50%;
    margin-left: -612.5px;
    width: 1225px;
    height: 760px;
    .content{
        margin: 20px auto;
        width: 1100px;
        margin-bottom: 0;
    }
    .iconTitle {
        position: relative;
        text-align: left;
        font-weight: bold;
        color: #373737;
        margin-left: 18px;
        font-size: 20px;
        &:before {
                position: absolute;
                background-color: #f5c543;
                left: -16px;
                content: "";
                border-radius: 3px;
                font-size: 20px;
                height: 70%;
                top: 13%;
                width: 6px;
            }
    }
    .close {
        position: absolute;
        display: block;
        cursor: pointer;
        color: #3f3f3f;
        user-select: none;
        transform: rotate(45deg) scale(1.2);
        font-weight: 320;
        font-size: 50px;
        right: 40px;
        top: 5px;
    }
    .title {
        font-size: 25px;
        margin: 27px 0 0 40px;
    }   
}