.about-page {
    width: 1000px;
    margin: 50px auto;
}


.about-page .title,
.auto .title {
    font-size: 30px;
    /* text-align: center; */
    margin: 50px 0;
}

.about-page p {
    line-height: 2;
    font-size: 14px;
    margin: 20px 0;
    width: 50%;
}

.auto {
    margin: auto;
}

.auto .model1 {
    width: 1400px;
    margin: 50px auto;
}


.auto .model2 {
    width: 1400px;
    margin: 50px auto;
    color: rgb(0, 82, 41);
}

.auto .model2 .title {
    font-weight: normal;
    margin: 20px 0;
}

.auto .model2 p {
    line-height: 1.5;
    margin: 50px 0;
    font-size: 14px;
    width: 50%;
}

.auto .row {
    position: relative;
    height: 600px
}

.auto .row .mask {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: rgba(0, 0, 0, .15);
    color: #fff;
    text-align: center;
    line-height: 2;

}

.auto .row .mask .title {
    font-size: 40px;
}

.auto .row2 {
    background-color: rgb(16, 40, 54);
    padding: 300px 0;
    margin: 0;
    color: #fff;
    font-size: 34px;
    text-align: center;
    line-height: 3;
}

.auto .row2 .small {
    font-size: 16px;
}

.auto .row3 {
    display: flex;
    width: 1400px;
    margin: 100px auto;
    align-items: stretch;
}

.auto .row3 .col {
    width: 50%;
    padding: 50px;
}

.auto .row3 .col .text {
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.auto .row3 .col .text .title {
    margin: 0 0 20px;
}

.auto .row3 .col .text p {
    line-height: 1.5;
}