style.css

* {
    margin: 0;
}

body {
    display: flex;
    width: 100vw;
    height: 100vh;
    align-items: center;
    justify-content: space-evenly;
}

main {
    justify-self: center;
}

.highlighted-player {
    height: 40px;
    width: 220px;
    font-size: 30px;
    font-family: Georgia;
    font-weight: bold;
    background: rgb(67, 145, 182);
    border-radius: 10px;
    text-align: center;
}

.player-one {
    color: rgb(252, 198, 22);
}

.player-two {
    color: crimson;
}

.starting-box {
    display: flex;
    margin: 5px;
    justify-content: center;
    align-items: center;
}

.starting-slot {
    height: 80px;
    width: 80px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.piece {
    height: 60px;
    width: 60px;
    border-radius: 50%;
    position: absolute;
}

.piece:hover {
    cursor: pointer;
}

.piece-drop {
    transition-duration: 2s;
    transition-property: transform;
}

.invisible {
    opacity: 0;
}

.container {
    display: flex;
    border: 5px solid royalblue;
}

.column {
    display: flex;
    flex-direction: column;
}

.slot {
    height: 80px;
    width: 80px;
    overflow: hidden;
}

.hole {
    height: 60px;
    width: 60px;
    border: 40px solid royalblue;
    border-radius: 50%;
    transform: translate(-30px, -30px);
}

.player1 {
    background: rgb(252, 198, 22);
}

.player2 {
    background: crimson;
}