.container {
    width: 100%;
    height: 100%;
    align-items: center;
    justify-content: center;
}
.piece1 {
    width: 100px;
    height: 50;
    margin: 20px;
    padding: 5px;
    min-width: 60px;
    min-height: 40px;
    max-width: 200px;
    max-height: 80px;
    background-color: pink;
    border: 3px solid green;
    box-shadow :1px 2px 1px 2px #888888;
    opacity: 0.8;
}
.piece2 {
    width: 100px;
    height: 50;
    margin: 10px;
    min-width: 60px;
    min-height: 40px;
    max-width: 200px;
    max-height: 80px;
    background-color: darksalmon;
    border: 3px dotted green;
    box-shadow :2px 1px 2px 1px #888888;
    opacity: 0.5;
}