.main{
    background: #F8FBFF;
    padding: 72px 0 75px;
    min-width: 1400px;
}
.title{
    font-weight: bold;
    font-size: 24px;
    color: #333333;
    margin-bottom: 19px;
    text-align: center;
}
.word{
    font-size: 16px;
    color: #333333;
    line-height: 24px;text-align: center;
    margin-bottom: 40px;
}
.word span{
    color: #0066FF;
    font-weight: bold;
}
.list{
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}
.list .item{
    width: 680px;
    height: 290px;
    margin-bottom: 40px;
    padding: 37px 29px 0 315px;
    box-sizing: border-box;
}
.subtitle{
    font-weight: bold;
    font-size: 24px;
    color: #333333;
    margin-bottom: 30px;
}
.des{
    font-size: 16px;
    color: #666666;
    line-height: 24px;
}
.list .item:nth-child(1){
    background: url("../images/bg-product-1.png") no-repeat;
    background-size: 100% 100%;
}
.list .item:nth-child(2){
    background: url("../images/bg-product-2.png") no-repeat;
    background-size: 100% 100%;
}
.list .item:nth-child(3){
    background: url("../images/bg-product-3.png") no-repeat;
    background-size: 100% 100%;
}
.list .item:nth-child(4){
    background: url("../images/bg-product-4.png") no-repeat;
    background-size: 100% 100%;
}