*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
.six-part {
    margin: 0;
    padding: 100px 0;
    background-color: #F2F5FC;
}
.flex-w{
    display: flex;
    flex-wrap: wrap;
}
.class-big {
    background-color: #ffffff;
    border-radius: 20px;
}
.class-img{
    width: 550px;
    height: 300px;
}
.class-img img{
    border-radius: 20px 20px 0 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}