.aboutUs{
    min-width: 1200px;
    overflow: auto;
}
.extensiveApplicationHeader {
    background-image: none;
    background-image: initial;
    background-color: white;
}
.productContent {
    color: white;
    line-height: 30px;
    background-image: url("/image/companyBg.png");
    background-size: cover;
    background-repeat: no-repeat;
    width: 100%;
}
.companyWrapper {
    width: 1100px;
    margin: auto;
}
.companyIntroduction {
    font-size: 14px;
    margin: 30px 0;
}
.developmentHistory {
    background-color: white;
    text-align: center;
}
.imgWrapper {
    margin: 40px 0;
    position: relative;
    display: inline-block;
}
.certificateContent {
    margin: auto;
    padding: 0 0 30px 0;
    width: 1100px;
    font-size: 12px;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}
.certificateItem {
    width: 275px;
    text-align: center;
    margin-top: 40px;
}
.certificateYear {
    font-size: 16px;
    margin: 10px 0;
}
.contactUsWrapper {
    background-color: #f4f8ff;
}
.contactUsContent {
    display: flex;
    justify-content: center;
    padding: 40px 0;
}
.contactItem {
     background-color: white;
    border-radius: 4px;
    text-align: center;
    padding: 50px 50px;
    /* margin: 0 20px; */
    border-radius: 4px;
    border: 1px solid #f4f8ff;
    transition: all 0.3s linear;
    width: 350px;
    line-height: 40px;
}
.contactItem1 {
     background-color: white;
    border-radius: 4px;
    text-align: left;
    padding: 50px 50px;
    /* margin: 0 20px; */
    border-radius: 4px;
    border: 1px solid #f4f8ff;
    transition: all 0.3s linear;
    width: 400px;
    line-height: 40px;
}
.serveContent {
    font-size: 14px;
    color: rgba(0, 0, 0, 0.6);
    margin: 20px 0;
    line-height: 24px;
    height: 48px;
}
.btn {
    color: white;
    font-size: 14px;
    text-align: center;
    width: 100px;
   
    background-color: #4285fc;
    margin: auto;
    cursor: pointer;
}
.developDate {
    font-weight: bold;
    font-size: 22px;
}
.developDescription {
    font-size: 14px;
    padding: 10px 0 5px 0;
    width: 110px;
    line-height: 18px;
}
.developItem {
    position: absolute;
}
.develop1 {
    top: 209px;
    left: -36px;
}
.develop2 {
    top: 110px;
    left: 61px;
}
.develop3 {
    top: 176px;
    left: 165px;
}
.develop4 {
    top: 23px;
    left: 280px;
}
.develop5 {
    top: 159px;
    left: 398px;
}
.develop6 {
    top: -25px;
    left: 483px;
}
.develop7 {
    top: 95px;
    left: 604px;
}
.develop8 {
    top: -20px;
    left: 720px;
}
.develop9 {
    top: 76px;
    left: 842px;
}
.certificateName {
    line-height: 35px;
    font-size: 14px;
    margin-top: 10px;
}
.linkTitle {
    font-size: 24px;
}