.titleImg{
    background: url(../../solution/images/production.jpg) no-repeat;
    background-size: cover;
}
.main h3{
    font-size: 38px;
    text-align: center;
    margin: 50px;
}
.main h3::after{
    content: '';
    display: block;
    border-bottom:3px solid #323D47;
    width: 100px;
    margin: 40px auto;
}
.check{
    width: 70%;
    height: 430px;
    margin: 50px auto;
}
/* 背景图 */
.home{
    background: url(../../solution/images/home.jpg) no-repeat;
    background-size: cover;
    background-position: center;
}
.shop{
    background: url(../../solution/images/shop.jpg) no-repeat;
    background-size: cover;
    background-position: center;
}
.storage{
    background: url(../../solution/images/storage.jpg) no-repeat;
    background-size: cover;
    background-position: center;
}
.medical{
    background: url(../../solution/images/medical.jpg) no-repeat;
    background-size: cover;
    background-position: center;
}
.yield{
    background: url(../../solution/images/yield.jpg) no-repeat;
    background-size: cover;
    background-position: center;
}
.check a{
    display: block;
    width: 100%;
    height: 100%;
    position: relative;
    bottom: 100%;
}
.check div{
    background-color: black;
    opacity: .4;
    display: block;
    width: 100%;
    height: 100%;
    position: relative;
    transition: background-color .2s ease-in-out,
                opacity .2s ease-in-out;
}
.check h4{
    font-size: 72px;
}
.check h4::after{
    width: 120px;
}
/* 多端自适应  */
@media all and (max-width:1010px){
    .main h3 {
        font-size: 28px;
    }
    .check {
        width: 80%;
    }
}
@media all and (max-width:888px){
    .main h3 {
        font-size: 24px;
    }
    .check {
        width: 85%;
        height: 275px;
    }
    .check h4{
        font-size: 54px;
        top: 100px;
    }
    .mainP{
        font-size: 14px;
        top: 180px;
    }
    .check:hover .mainH4{
        top: 40px !important;
    }
    .check:hover .mainP{
        top: 90px !important;
        transition: top .5s ease-in-out, opacity .6s ease-in-out;
    }
}
@media all and (max-width:555px){
    .main h3 {
        font-size: 18px;
        margin: 30px;
    }
    .check {
        height: 200px;
    }
    .check h4{
        font-size: 32px;
        top: 30px;
    }
    .mainP{
        top: 40px;
        opacity: 1;
    }
    .check:hover .mainH4{
        top: 30px !important;
    }
    .check:hover .mainP{
        top: 40px !important;
    }
}
@media all and (max-width:450px){
    .check {
        width: 90%;
        margin: 30px auto;
    }
    .check h4{
        font-size: 32px;
        top: 20px;
    }
    .mainP{
        top: 20px;
        opacity: 1;
        margin: 20px;
    }
    .check:hover .mainH4{
        top: 20px !important;
    }
    .check:hover .mainP{
        top: 20px !important;
    }
}