.caseService21 {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
}

.caseService21 * {
    box-sizing: border-box;
}

.caseService21 img {
    max-width: 100%;
    display: block;
    border: none;
    height: 44px;
    object-fit: cover;
}

.caseService21 .case_content {
    border: 2px solid #D0D0D0;
    width: 146px;
    height: 146px;
    border-radius: 100%;
    text-align: center;
    display: flex;
    align-items: center;
    background: #fff;
    transition: all .5s;
}

.caseService21 .case_content img {
    margin-bottom: 12px;
    margin: 0 auto;
}

.caseService21 .case_content .normal_img {
    display: block;
}

.caseService21 .case_content .hover_img {
    display: none;
}

.caseService21 .case_content .title {
    font-size: 14px;
    color: #333;
    line-height: 2;
    word-break: break-all;
    overflow: hidden;
    text-overflow: ellipsis;
    -webkit-line-clamp: 1;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    height: 28px;
}

.caseService21 .case_content .des {
    font-size: 12px;
    color: #555;
    line-height: 2;
    width: 90%;
    margin: 0 auto;
    word-break: break-all;
    overflow: hidden;
    text-overflow: ellipsis;
    -webkit-line-clamp: 2;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    height: 48px;
}

.caseService21 .case_content:hover {
    background: #c21528;
    border: 2px solid #c21528;
}

.caseService21 .case_content:hover .normal_img {
    display: none;
}

.caseService21 .case_content:hover .hover_img {
    display: block;
}

.caseService21 .case_content:hover .des,
.caseService21 .case_content:hover .title {
    color: #fff;
}

.case_content_icon {
    float: left;
    width: 44px;
    text-align: center;
    color: #ff0000;
    transition: all .5s;
}