.comment{
    width: 100%;
    padding-top:90px; 
    padding-bottom: 250px;
}
.ched{
    width: 100%;
    text-align: center;
    line-height: 44px;
}
.ched p:nth-child(1){
    font-size: 22px;
    color: #262626;
}
.ched p:nth-child(1) span{
    color: #999999;
    margin:  0 20px;

}
.ched p:nth-child(2){
    font-size: 18px;
    color: #262626;
}
.comul{
    width: 1100px;
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    justify-content:space-between;
}
.comul li{
    width: 350px;
    text-align: center;
    height: 260px;
    position: relative;
    color: white;
    margin-top: 30px;
    box-shadow: #333333 0px 0px 2px; 
    overflow: hidden;
    
}
.comul li .bg{
    width: 100%;
    position: absolute;
    top: 0;
    left: 0;
    z-index: -1;
    transition: all 0.5s;
    -webkit-transition: all 0.5s;
    -moz-transition: all 0.5s;
    -o-transition: all 0.5s;
    -ms-transition: all  0.5s;

}
.comul li a{
    color:white;
}
.comul li .icon{
    margin-top: 50px;
    transition: all 0.5s;
    -webkit-transition: all 0.5s;
    -moz-transition: all 0.5s;
    -o-transition: all 0.5s;
    -ms-transition: all  0.5s;
}
.comul li p:nth-child(3){
    font-size: 16px;
    margin-top: 30px;
}
.comul li p:nth-child(4){
    font-size: 14px;
    margin-top: 30px;
}
.comul li:hover .bg{
    transform: scale(1.1,1.1);
    -moz-transform: scale(1.1,1.1);
    -ms-transform: scale(1.1,1.1);
    -o-transform: scale(1.1,1.1);
    -webkit-transform: scale(1.1,1.1);
}
.comul li:hover .icon{
    margin-top: 20px;
}
@media screen and (max-width: 700px){
    .comment {
        width: 100%;
        padding-top: 0.3rem;
        padding-bottom: 2rem;
    }
    .ched {
        width: 100%;
        text-align: center;
        line-height: 0.5rem;
    }
    .ched p:nth-child(1) {
        font-size: 0.28rem;
    }
    .ched p:nth-child(2) {
        font-size: 0.26rem;
    }



    .comul {
        width: 100%;
        padding: 0 0.2rem;
    }
    .comul li {
        width: 48%;
        text-align: center;
        height: 2.54rem;
        margin-top: 0.3rem;
        font-size: 0;

    }
    .comul li .icon {
        margin-top: 0.5rem;
        width: 0.5rem;

    }
    .comul li p:nth-child(3) {
        font-size: 0.26rem;
        margin-top: 0.2rem;
    }
    .comul li p:nth-child(4) {
        font-size: 0.24rem;
        margin-top: 0.2rem;
    }
}