.show-banner {
    background: #F4F6FF no-repeat;
    background-image: url(../img/4.0/show/banner.png);
    text-align: center;
    padding-bottom: 137px;
    padding-top: 166px;
}
.show-banner .banner {
    width: 825px;
    height: 142px;
    display: inline-block;
}
.show-conetnt {
    max-width: 1255px;
    margin: 0 auto;
    padding-top: 80px;
}
.show-class {
    display: flex;
}
.show-class-left {
    width: 200px;
    background: #FFFFFF; 
    border-radius: 20px;
    box-sizing: border-box;
    padding: 48px 27px;
}
.show-class-left  div {
    text-align: left;
}
.class-menu {
    color: #191919;
    font-weight: 500;
    font-size: 20px;
    cursor: pointer;
    padding-top: 26px;
    padding-bottom: 10px;
    position: relative;
}
.class-menu.active {
    color: #B311FF;
}
.class-menu-child {
    font-size: 16px;
    font-weight: 400;
    color: #7D8995;
    height: 40px;
    width: 146px;
    border-radius: 6px;
    line-height: 40px;
    padding-left: 26px;
    box-sizing: border-box;
    cursor: pointer;
    position: relative;
}
.class-menu-child.active {
    background: #F4F6FF;
    color: #B311FF;
}
.class-menu-child.active::after {
    content: "";
    position: absolute;
    width: 9px;
    height: 9px;
    background: linear-gradient(101.31deg, #D16FFF 7.78%, rgba(209, 112, 255, 0) 94.44%);
    border-radius: 50%;
    left: 11px;
    top: 16px;
}
.class-menu.active::after {
    content: "";
    position: absolute;
    width: 9px;
    height: 9px;
    background: linear-gradient(101.31deg, #D16FFF 7.78%, rgba(209, 112, 255, 0) 94.44%);
    border-radius: 50%;
    left: -13px;
    top: 35px;
}
.class-menu-all.active::after {
    top: 10px;
}
.class-menu:hover, .class-menu-child:hover {
    color: #B311FF;
}
.class-item {
    width: 318px;
    height: 186px;
    background: #FFFFFF;
    box-shadow: 0px 0px 40px rgba(26, 58, 129, 0.06);
    border-radius: 20px;
    box-sizing: border-box;
    padding: 27px 18px;
}
.class-item-title {
    display: flex;
    align-items: center;
}
.class-item-title img {
    width: 40px;
    height: 40px;
    margin-right: 13px;
    border-radius: 14px;
    background: #B311FF;
    border-radius: 14px;
}
.class-item-title div {
    font-weight: 600;
    font-size: 24px;
    color: #191919;
}
.class-item-subtitle {
    height: 40px;
    text-align: left;
    color: #7D8995;
    font-weight: 400;
    font-size: 14px;
    margin-top: 12px;
    overflow: hidden;
    -webkit-line-clamp: 2;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-box-orient: vertical;

}
.class-item-price {
    color: #191919;
    font-weight: 800;
    font-size: 24px;
    display: flex;
    align-items: center;
    position: relative;
    margin-top: 16px;
    text-align: left;
    justify-content: space-between;
}
.class-item-price-div {
    display: flex;
    align-items: baseline;
}
.class-item-price .signal {
    font-weight: 500;
    font-size: 14px;
    margin-right: 3px;
}
.class-item-price-btn {
    opacity: 0;
    margin-right: 20px;
}
.class-item-price-btn .btn-details:hover {
    background: linear-gradient(96.09deg, #B311FF 9.34%, #8000FF 94.81%);
}
.btn-details {
    background: #191919;
    border-radius: 22px;
    line-height: 40px;
    width: 100px;
    text-align: center;
    font-weight: 600;
    font-size: 14px;
    color: #FFFFFF !important;
    cursor: pointer;
    text-decoration:none;
    display: inline-block;
}
.btn-details a {
    color: #FFFFFF !important;
}
.btn-buy {
    font-weight: 400;
    font-size: 14px;
    color: #191919;
    margin-left: 8px;
    text-decoration:none;
}
.class-item:hover .class-item-price-btn {
    opacity: 1;
}