.w{
    overflow:hidden;
    margin-bottom: 50px;
    margin-top: 10px;
}
section div {
    float: left;
    height: 24vw;
    margin: 1%;
    width: 46%;
    border-style: solid;
    border-width: 1px;
}
section {
    margin:-1%;
    padding:20px;
}