.main {
    max-width: 1200px;
    margin: auto;
}

body {
    min-width: 1200px !important;
}

body, button, input, select, textarea {
    color: #444;
    font: 14px/1.5 "PingFang SC", Arial, "Microsoft YaHei", sans-serif;
}

ul,ol {
    list-style-type: none;
}

a {
    color: #444;
    text-decoration: none;
    transition: all 0.1s ease-in-out;
    -webikit-transition: all 0.1s ease-in-out;
    -moz-transition: all 0.1s ease-in-out;
    -ms-transition: all 0.1s ease-in-out;
}

a:hover {
    color: #e5a414;
}

* {
    margin: 0;
    padding: 0;
}
.aboutUs-div{
    background-color: #EEEEEE;
}


/* banner区域 */
.banner {
    width: 100%;
    height: 150px;
    background: url(/img/sem/extension-google-banner.png) #637EA5 no-repeat center/1920px;
    /*margin-top: 55px;*/
}

.text{
    font-size: 16px;
    font-family: PingFang SC-Regular, PingFang SC;
    font-weight: 400;
    color: #333333;
}
.model1-box{
    margin-top: 51px;
}
.model1-box .model1-text-box div:nth-child(1){
    margin-bottom: 15px;
}

.model2-box .model2-text-box .text-title{
    font-size: 36px;
    font-family: PingFang SC-Bold, PingFang SC;
    font-weight: bold;
    color: #333333;
    text-align: center;
    margin-bottom: 60px;
}

.model2-box .model2-img-box{
    display: flex;
    justify-content: space-between;
}
.model2-box{
    margin-top: 100px;
    margin-bottom: 41px;
}
.model2-box .model2-img-box ul{
    min-width: 350px;
    width: 350px;
}
.model2-box .model2-img-box ul li .img-text-title{
    font-size: 26px;
    font-family: PingFang SC-Bold, PingFang SC;
    font-weight: bold;
    color: #4285F4;
}
.model2-box .model2-img-box ul li:nth-child(2){
    margin-top: 41px;
    margin-bottom: 27px;
}
.model3-background-box{
    background: #F8F8F8;
    padding-top: 50px;
    padding-bottom: 48px;
}
.model3-box{
    text-align: center;
}
.text-h1{
    font-size: 36px;
    font-family: PingFang SC-Bold, PingFang SC;
    font-weight: bold;
    color: #333333;
    margin-bottom: 27px;
}
.model3-box img{
    margin-top: 41px;
}
.model4-box{
    margin-top: 100px;
    display: flex;
    justify-content: space-between;
}
.model4-box .model4-right{
    min-width: 492px;
    width: 492px;
    margin-top: 125px;
}
.model4-box .model4-right img{
    margin-top: 48px;
}

.model5-box{
    margin-top: 100px;
    margin-bottom: 124px;
}
.model5-box .text-h1{
    text-align: center;
}
.model5-box .model5-right{
    display: flex;
    justify-content: space-between;
    margin-top: 71px;

}
.model5-box .model5-right div{
    min-width: 350px;
    width: 350px;
}