.banner{
    width:100%;
    height:500px;
    margin: 125px auto 0 auto;
}
.banner img{
    width:100%;
    height:100%;
    object-fit: cover;
}
.title{
    margin-top:115px;
    margin-bottom:90px;
}
.title h3{
    color:#222;
    font-size:42px;
    text-align:center;
}
.title h3 span{
    border-bottom:6px solid #2AA3A3;
}
.aside{
    margin-top:160px;
}
.aside h3{
    color:#666;
    font-size:32px;
}
.aside img{
    display:block;
}
.aside img.width90{
    width:90%;
    margin:80px auto 0;
}
.aside img.width40 {
    width: 40%;
    margin: 85px auto 0;
}
.aside img.width70 {
    width: 70%;
    margin: 50px auto 0;
}
.aside p{
    font-size:26px;
    color:#666;
    line-height:42px;
    margin-top:100px;
    font-weight: lighter;
}
.aside p.last{
    margin-top:70px;
}
.aside img.width80 {
    width: 80%;
    margin: 100px auto 0;
}
.main{
    margin-top:120px;
}
/* 左文右图 */
.item_count {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 30px 40px;
    margin-bottom: 70px;
}

.grey {
    background: #EEEEEE;
}

.right h3 {
    text-align: right;
}

.item_count .item_text {
    flex: 1;
    margin-right: 100px;
}

.item_count .item_text h3 {
    font-size: 32px;
    color: #666;
    padding-bottom: 20px;
    border-bottom: 1px solid #A3A3A3;
    font-weight: normal;
}

.item_count .item_text p {
    margin-top: 20px;
    font-size: 26px;
    line-height: 42px;
    color: #666;
    font-weight: lighter;
}

.item_count .item_pic img {
    width: 100%;
}

.right .item_text {
    margin-right: 0;
    margin-left: 70px;
}
.item_count .first {
    width:390px;
}
.three .item_pic{
    width:550px;
}
.right_text{
    text-align:right;
}
.last .item_pic {
    width: 500px;
}