.test-list {
    margin-top: 30px;
    justify-content: space-around
}

.test-list .test-item {
    width: 3rem;
    height: 3rem;
    transition: all .3s;
    background-color: #fff;
    border-radius: 20px;
}

.test-list .test-item:hover{
    box-shadow: 0px 4px 20px 0px rgba(0,0,0,0.21);
}

.test-list .test-item:hover .item_img {
    display: none;
}

.test-list .test-item:hover .item_img_active {
    display: block;
}

.test-item .item_img {
    display: block;
    padding-top: .4rem;
    width: 1rem;
}
.test-item .item_img_active {
    display: none;
    padding-top: .4rem;
    width: 1rem;
}

.test-item  .test-item-name {
    margin-top: .5rem;
    width: 1.3rem;
    line-height: 26px;
    border: 2px solid#6B7280;
    border-radius: 10px;
    text-align: center;
    color: #374151;
}


.desc-box {
    margin: 30px 0;
}

.test-desc {
    padding: 20px;
    width: 50%;
    box-sizing: border-box;
}

.desc-title {
    font-size: 30px;
    color: #171717;
}

.desc-sub-title {
    color: #404040;
}

.desc-content {
    color: #737373;
    line-height: 28px;
}

.desc-img {
    display: flex;
    align-items: center;
    width: 50%;
}

/* ipad */
@media screen and (max-width:1000px) {
    .test-list > a {
        width: 30%;
    }

    .test-list .test-item {
        width: 100%;
        height: 130px;
        border-radius: 10px;
    }

    .test-item .item_img {
        width: 40px;
    }
    .test-item .item_img_active {
        width: 40px;
    }

    .test-item  .test-item-name {
        font-size: 12px;
        width: 60px;
        line-height: 20px;
    }
}

/* ipad */
@media screen and (max-width:1000px) {
    .desc-box {
        flex-direction: column;
    }

    .test-desc {
        width: 100%;
    }

    .desc-img {
        width: 100%;
    }
    
}