.outer_div {
    margin: 60px auto 50px;
    width: 1220px;
    background-color: #f5f5f5;
    clear: both;
    font-family: 'SourceHanSansCN-Normal';
    text-align: center;
}

.green_title {
    margin-top: -7px;
}

.big_title {
    color: #313132;
    font-size: 30px;
    font-weight: bold;
}

.normal_text {
    color: #636363;
    font-size: 18px;
    line-height: 30px;
}

.banner_text {
    letter-spacing: 5px;
    position: absolute;
    top: 282px;
    margin-left: 15%;
    font-weight: bold;
}

.banner_text .text_1 {
    color: #006633;
    font-size: 36px;
}

.banner_text .text_2 {
    color: #979797;
    font-size: 24px;
    margin: 10px 0;
}

.float {
    float: left;
}

.clear {
    clear: both;
}