body{
    position:relative;
}
.about_main{
    margin-top:86px;
}
.about_main_top{
    width:100%;
    height:100%;
}
.about_main img{
    width:100%;
    height:100%;
}
.about_main_con{
    padding: 5% 3%;
    width: 72%;
    position: absolute;
    left: 50%;
    top: 28%;
    box-shadow: 0px 0px 10px #666;
    margin-left: -36%;
    background-color: #fff;
    text-align: center;
    box-sizing: border-box;
    min-height: 30%;
    text-indent:2em;
}
.about_main_con h2{
    margin-bottom:5%;
    font-size:40px;
}
.about_main_con p{
    line-height:30px;
    text-align:left;
    margin-bottom:5%;
    font-size:30px;
}
@media all and (max-width:1024px) {
    .footer{
        position: fixed;
        bottom: 0;
    }
}