.about_h{
    position: relative;
    padding: 6% 0% 6%;
}
.about_h::after{
    position: absolute;
    content: "";
    right: 0%;
    top: 0%;
    width: 33.3%;
    height: 100%;
    z-index: -1;
    background-color: #ee361d;
    transition: all .3s linear;
}
.about_h::before{
    position: absolute;
    content: "";
    left: 0%;
    bottom: 0%;
    width: 100px;
    height: 100px;
    z-index: -1;
    background: url(../images/a_bout_icon_02.png) no-repeat;
    background-size: 100% 100%;
}
.about_h:hover:after{
    width: 47%;
}
.about_b{
    position: relative;
}
.about_b figure img{
    width: 100%;
    display: block;
}
.about_b span{
    display: block;
}
.about_life ul li span strong,
.about_industr span strong,
.about_b span strong{
    color: #323232;
    font-weight: bold;
}
.about_b span p{
    margin-top: 6%;
}
.about_life ul li span hr,
.about_industr span hr,
.about_b hr{
    width: 70px;
    height: 3px;
    background-color: #ee361d;
    transition: all .2s linear;
}
.about_life ul li span:hover hr,
.about_industr:hover span hr,
.about_b:hover hr{
    width: 30%;
}
.about_industr_h{
    box-shadow: 0px 0px 4px 1px #0000002d;
}
.about_life,
.about_industr{
    margin: 6% auto 5%;
}
.about_industr ul li{
    width: 49%;
    float: left;
    margin-right: 2%;
    margin-bottom: 2%;
}
.about_industr ul li:nth-of-type(2n){
    margin-right: 0%;
}
.about_industr ul li figure{
    width: 100%;
}
.about_industr ul li figure img{
    width: 100%;
    display: block;
}
.about_industr span{
    display: block;
    padding: 2% 0% 0% 2%;
    box-sizing: border-box;
}
.about_industr span strong{
    display: block;
    text-transform: uppercase;
}
.about_industr span b{
    font-size: 16px;
    color: #ee361d;
}
.about_life figure img{
    width: 100%;
    display: block;
}
.about_life ul li{
    width: 100%;
    height: auto;
    display: table;
}
.about_life ul li figure img{
    width: 100%;
    display: block;
}
.about_life ul li span{
    display: block;
}
.about_life ul li span p{
    margin-bottom: 0%;
}

@media screen and (min-width:1400px) {
    .about_life ul li span p,
    .about_industr span p,
    .about_b span p{
        font-size: 18px;
        line-height: 32px;
    }
    .about_life ul li span p,
    .about_industr span p{
        line-height: 36px;
    }
}
@media screen and (max-width:1400px){
    .about_life ul li span p,
    .about_industr span p,
    .about_b span p{
        font-size: 16px;
        line-height: 26px;
    }
}
@media screen and (min-width:1200px) {
    .about_b figure{
        width: 43%;
        float: right;
    }
    .about_b span{
        width: 52%;
        float: left;
    }
    
    .about_life ul li span strong,
    .about_industr span strong{
        font-size: 44px;
        line-height: 60px;
    }
    .about_industr span b{
        line-height: 36px;
    }
    .about_industr span p{
        margin-top: 13%;
    }
    .about_life ul li span{
        margin-top: 7%;
    }
}
@media screen and (max-width:1200px){
    .about_b figure,
    .about_b span{
        width: 66%;
    }
    .about_b::after {
        position: absolute;
        content: "Shandong China Coal";
        right: 6%;
        top: 1%;
        font-size: 52px;
        line-height: 116px;
        font-weight: bold;
        letter-spacing: 30px;
        color: #fff;
        text-transform: uppercase;
        writing-mode: vertical-rl;
        word-wrap: break-word;
    }
    .recommen_title span strong,
    .about_life ul li span strong,
    .about_industr span strong{
        font-size: 34px;
        line-height: 46px;
    }
    .about_industr span b{
        line-height: 30px;
    }
    .about_industr span p{
        margin-top: 2%;
    }
    .about_life ul li span{
        margin-top: 4%;
    }
}
@media screen and (min-width:992px) {
    .about_industr span{
        width: 44%;
        float: right;
        text-align: right;
    }
    .about_industr ul{
        width: 56%;
        float: left;
    }
    .about_life ul{
        width: 74.8%;
        float: left;
    }
    .about_life>figure{
        width: 25.2%;
        float: right;
    }
    .about_life ul li figure{
        width: 32.3%;
        float: right;
        margin-right: 1%;
    }
    .about_life ul li:nth-of-type(1){
        margin-bottom: 1%;
    }
    .about_industr span strong{
        margin: 4% auto 2%;
    }
}
@media screen and (max-width:992px){
    .about_b::after {
        right: 4%;
        font-size: 48px;
        line-height: 100px;
        letter-spacing: 30px;
    }
    .about_industr span,
    .about_industr ul{
        width: 100%;
        padding: 0%;
    }
    .about_life ul{
        width: 100%;
    }
    .about_life>figure{
        display: none;
    }
    .about_life ul li:nth-of-type(1){
        margin-bottom: 2%;
    }
    .about_life ul li figure{
        width: 32%;
        float:right;
        margin-left: 2%;
    }
    .about_life ul li figure:nth-of-type(3n){
        margin-left: 0%;
    }
    .about_industr span strong{
        margin: 0% auto 2%;
    }
}
@media screen and (min-width:860px){
   
}
@media screen and (max-width:860px){
    
}
@media screen and (min-width:768px) {
    .about_b span strong{
        font-size: 44px;
        line-height: 60px;
    }
}
@media screen and (max-width:768px){
    .about_b::after {
        font-size: 44px;
        line-height: 70px;
    }
    .recommen_title span strong,
    .about_b span strong{
        font-size: 34px;
        line-height: 46px;
    }
    .about_life ul li span {
        margin-top: 3%;
    }

}
@media screen and (min-width:640px) {
    .about_life ul li span{
        width: 63%;
        float: left;
    }
}
@media screen and (max-width:640px){
    .about_life ul li span{
        margin-top: 0%;
        width: 100%;
    }
    .about_life ul li:nth-of-type(1) figure{
        display: none;
    }
}
@media screen and (min-width:560px) {
    

}
@media screen and (max-width:560px){
    .about_b::after {
        font-size: 30px;
        line-height: 54px;
        letter-spacing: 40px;
    }
    .about_life ul li span strong,
    .about_industr span strong,
    .about_b span strong{
        font-size: 30px;
        line-height: 40px;
    }
    .about_industr span b {
        line-height: 26px;
    }
    
}
@media screen and (max-width:460px){
    .about_h::after,
    .about_b::after{
        display: none;
    }
    .about_b figure, .about_b span {
        width: 100%;
    }
}