.box1 {
    width: 90%;
    height: 50%;
    border-width: 1px;
    border-color: darksalmon;
    border-style: groove;
    background-color: darkslategrey;
    margin: 1em;
    padding: 2em;
    border-radius: 3px;
    background-image: linear-gradient(yellow blue);
}
.box2 {
    width: 600px;
    height: 400px;
    border-width: 1px;
    background-color: darkviolet;
    margin: 10em;
    border-radius: 50%;
    box-shadow: 10px 10px dimgrey;
}