.unit2 {
    width: 100%;
    overflow: hidden;
    padding-top: 40px;
    padding-bottom: 70px;
}

.content_div {
    display: flex;
    flex-wrap: wrap;
}

.content_div li {
    width: calc((100% - 60px) / 3);
    margin-right: 30px;
}

.imgBox {
    width: 100%;
    overflow: hidden;
    position: relative;
    padding-bottom: 74%;
}

.imgBox img {
    width: 100%;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    height: 100%;
    object-fit: cover;
    transition: 0.6s all;
}

.tool {
    margin: 1.5rem 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.tool h3 {
    padding-left: 4rem;
    position: relative;
    color: #333333;
    font-size: 2rem;
}

.tool h3:before{
    content: "";
    display: block;
    width: 23px;
    height: 7px;
    background-color: #366ec9;
    position: absolute;
    top: 12px;
    left: 0;
}

.content_div li:hover img{
    transform: translate(-50%, -50%) scale(1.05);
}

.content_div li:hover h3{
        color: #0075cb;
}

@media only screen and (min-width:768px) {
    .content_div li:nth-child(3n) {
        margin-right: 0;
    }
}

@media only screen and (max-width:769px) {
    .content_div li{
        width: 100%;
        margin-right: 0;
        margin-bottom: 25px;
    }
}