.layout {
    max-width: 1600px;
    margin: auto;
}

.add {
    /* border: 1px solid red; */

}

.a_title {
    text-align: center;
    margin: 40px 0px;
    font-size: 48px;
    color: #333333;
    font-weight: bold;
}

.add_info {
    text-align: center;
}

.a_num {
    color: #333333;
    text-align: center;
    font-size: 20px;
    display: inline-block;
    margin-right: 20px;
    line-height: 30px;
    vertical-align: top;
}

.a_copy {
    height: 30px;
    line-height: 30px;
    background: #2b91e7;
    border-radius: 5px;
    color: white;
    display: inline-block;
    box-sizing: border-box;
    padding: 0px 15px;
    font-size: 14px;
}

.add_img {
    width: 34%;
    margin: 80px auto 50px;
}

.add_img img {
    width: 100%;
}

@media screen and (max-width:1200px) {
    .add_img {
        width: 40%;
    }


}

@media screen and (max-width:1100px) {
    .add_img {
        width: 50%;
    }


}

@media screen and (max-width:800px) {

    .add_img {
        width: 60%;
    }


}

@media screen and (max-width:700px) {
    .a_title {
        font-size: 24px;
        margin: 20px auto;
    }

    .add_img {
        margin: 40px auto;
        width: 90%;
    }


}