main {
    background: rgb(197, 197, 197);
    width: 1500px;
    height: 500px;
    padding: 15px;
    margin: 5px 10px;
    border: 1px solid;
    border-radius: 10px 0px 0px 10px;
    overflow: auto;
}

div {
    background: rgb(150, 110, 76);
    padding: 25px;
    margin: 10px 5px 5px 5px;
    border-radius: 20px;
    box-shadow: inset 0px 0px 10px rgb(47, 45, 45);
    display: inline-block;
    width: 290px;
    height: 200px;
    box-sizing: border-box;
}