.about_main{
    margin-top:86px;
}
.about_main_top{
    width:100%;
    height:100%;
}
.about_main_top img{
    width:100%;
    height:100%;
}

.about_main_con div{
    padding: 0 26%;
    line-height: 40px;
    box-sizing:border-box;
    text-indent:2em;
}
.about_main_con div:nth-child(4){
    border-top: 1px solid #77915d;
    border-bottom: 1px solid #77915d;
    height: 100px;
    width:900px;
    padding: 0;
    margin: 30px auto;
    text-align:center;
    color:#77915d;
    line-height:100px;
    font-size:2rem;
}

.about_main_con img{
    width:100%;
    height:100%;
}
.about_main_con div h3{
    margin:15px 0;
    font-size:40px;
}

.about_main_con div p{
    margin-bottom:20px;
    font-size:30px;

}

@media all and (max-width:1024px) {
    .about_main_con div{
        padding: 0 8%;
        line-height: 40px;
    }
}