.about-us-box{
    width: 1200px;
    min-height: 500px;
}
.line-title{
    width: 1200px;
    height: 110px;
    font-size: 4rem;
    border-bottom: #D8D8D8 solid 1px;
}
.line-title:before{
    content: "";
    width: 15px;
    height: 50px;
    background-color: #13234A;
    margin-right: 10px;
}
.about-us-box .about-desc{
    width: 1200px;
    font-size: 2.2rem;
    margin-top: 30px;
    box-shadow: 0px 2px 8px 0px rgba(13,50,116,0.13);
    min-height: 300px;
    padding-left: 2rem;
    padding-right: 2rem;
}

.about-desc>div{
    width: 1200px;
    min-height: 250px;
}


.about-us-box .contact-map{
    width: 1200px;
    font-size: 2.2rem;
    margin-top: 30px;
    height: 600px;
}

.solution{
    font-size: 3rem;
    height: 120px;
}
.solution-box{
    width: 1200px;
    height: 300px;
    margin-bottom: 30px;
}
.solution-box>div{
    width: 600px;
    height: 300px;
}
.solution-box>div>div{
   margin-bottom: 20px;
}
.solution-title{
    font-size: 2rem;
}
.solution-descp{
    font-size: 1.6rem;
    color: #7B8296;
    width: 600px;
}