.container{

}

.banner {
    width: 100%;
    padding-top: 78px;
    text-align: center;
    background: linear-gradient(to right, #f6f6f6, #e4e8eb);
}

.banner p {
    line-height: unset;
    font-size: unset;
}

.banner img{
    width: 1440px;
    height: auto;
    margin: 0 auto;
}


.tab-menu{
    display: flex;
    width: 1280px;
    margin: 0 auto;
    border-bottom: 1px solid #E9E9E9;
}

.tab-menu ul {
    list-style-type: none;
    display: flex;
    justify-content: center;
}

.tab-menu ul li {
    font-size: 18px;
    color: #666666;
    line-height: 25px;
    padding: 26px 25px 19px;
    cursor: pointer;
    margin-right: 20px;
}

.tab-menu ul li.active {
    color: #333333;
    border-bottom: 2px solid #40A3E1;
}

.item-wrap {
    width: 100%;
}

.item {
    width: 1280px;
    margin: 0 auto;
    padding: 0 0 50px;
}

.item .main-tit{
    font-size: 20px;
    color: #333333;
    line-height: 28px;
    text-align: center;
    padding: 50px 0 42px;
}

.item .img{
    width: 100%;
    height: auto;
}