body{
    min-width: 1280px;
    max-width: 1920px;
    margin: 0 auto;
}
.solve{
    display: flex;
    justify-content: space-between;
}
.solve >div{
    width: 25%;
    height: 100px;
    border: 1px solid #ccc;
    box-sizing: border-box;
}
.solve-bg{
    position: relative;
    width: 100%;
    overflow: hidden;
}
.solve-bg img{
    position: absolute;
    width: 100%;
    height: 100%;
    left: 0;
    bottom: -100%;
    z-index: -1;
}
.caseTypeItem{
    display: flex;justify-content: space-between;font-size: 16px; padding-bottom:15px;
}