.a_head {
    width: 1200px;
    margin-top: 20px;
    margin-left: auto;
    margin-right: auto;
}

.a_head_tt {
    width: 100%;
    height: 60px;
    margin-top: 20px;
    display: flex;
    align-items: center;
    background-color: white;
    font-size: 14px;
}

.a_head_tt1 {
    width: 80px;
    height: 15px;
    line-height: 15px;
    text-align: right;
    margin-left: 20px;
    border-left: 3px solid red;
}

.a_head_tt2 {
    width: 1080px;
    text-align: right;
    color: rgb(191, 191, 191);
}

.a_head_ct {
    width: 1200px;
    background-color: white;
    margin-top: 20px;
    padding-bottom: 10px;
}

.a_head_ct_img {
    width: 1100px;
    margin-left: auto;
    margin-right: auto;
    display: flex;
    flex-wrap: wrap;
    padding-top: 20px;
}

.a_head_ct_img img {
    width: 350px;
    height: 230px;
    margin: 5px;
}

.a_head_ye {
    margin-top: 60px;
}