.case .case_content .case_item {
    transition: all .3s;
}
.case .case_content .actives {
    transform: translateY(-10px);
    box-shadow: 0px 0px 20px rgba(0, 0, 0, 0.12);
    
}
.case .case_content .case_item  .down {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 15px;
}
.case .case_content .case_item  .down>a>img {
    width: 20px;
    height: 20px;
}
.case .case_content .case_item  .down>h1 {
    font-size: 18px;
    font-weight: bold;
    color: #333333;
    overflow: hidden;
    text-overflow:ellipsis;
    white-space: nowrap;

}
.case .case_content .case_item {
    position: relative;
    text-align: center;
    width: 31%;
    margin-right: 3.5%;
    margin-bottom: 40px;
}
@media screen and (max-width: 1024px) {
    .case .case_content .case_item  .down {
        margin: 10px;
    }
    .case .case_content .case_item {
        margin-bottom: 60px;
    }
}
@media screen and (max-width: 860px) {
   
  
    .case .case_content .case_item {
        width: 48%;
        margin-bottom: 20px;
    }
    /* .case .case_content .case_item  .down>h1 {
        font-size: 14px;
    } */
    .case .case_content .case_item .down>a>img {
        margin-bottom: 4px;
        width: 15px;
        height: 15px;
    }
    .m-style a {
        width: 30px;
        height: 30px;
        line-height: 30px;
    }
}
@media screen and (max-width: 750px) { 
    .case .case_content .case_item a img {
        width: 100%;
        height: 81%;
        transition: all .5s;
    }
    .case .case_content .case_item  .down>h1 {
       font-size: 15px;
   }
   .case .case_content .case_item {
    box-shadow: 0px 0px 20px rgba(0, 0, 0, 0.12);
    margin-bottom: 25px;
   }
}
@media screen and (max-width: 500px) { 
    .case .case_content .case_item a img {
        width: 100%;
        height: 78%;
        transition: all .5s;
    }
    .case .case_content .case_item {
        width: 48%;
        margin-bottom: 20px;
    }
    .m-style a {
        width: 20px;
        height: 20px;
        line-height: 20px;
    }
    .m-style .active {
        width: 25px;
        height: 25px;
        line-height: 25px;
    }
    .m-style span {
        width: 25px;
        height: 25px;
        line-height: 25px;
    }
    .case .case_content .case_item .down {
        margin: 5px 10px;
    }
}