html, body {
    margin: 0;
    padding: 0;
}

:root {
    --card-height: 200px;
}

.container{
    display: flex;
    justify-content: center;
    margin: 30px auto;

}

.card{
    
    height: var(--card-height);
    width: calc(var(--card-height) * 2/3);
    border: 2px solid black;
    border-radius: 5px;
    display: grid;
    padding: 5px;
}

.center{
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 50px;
}

.bottom{
    transform: rotate(180deg);
}