styles.css

* {
    font-family: 'Press Start 2P', cursive;
}

.grid {
    display: grid;
    grid-template-columns: 320px 200px;
    text-align: center;
    left: 30%;
    top: 5%;
    width: 50%;
    margin: 0 auto;
    position: absolute;
    color: #FF7F50;
}

.right-column {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.game-board {
    border: solid 2px;
}

.play-button {
    text-align: center;
    background-color: #4caf50;
    font-size: 16px;
    padding: 15px 30px;
    cursor: pointer;
}

.next {
    border: solid 2px;
    position: relative;
    top: 40px;
}

.popup {
    background: rgb(0, 255, 255);
    border-radius: 8px;
    position: absolute;
    top: 25%;
    left: 105%;
    font-size: 15px;
    transform: translate(-50%, -25%);
    text-align: center;
    padding: 0 30px 30px;
    color: #333;
}

.background {
    position: absolute;
    width: 100%;
    height: 100%;
}

.main_back {
    position: absolute;
    width: 100%;
    height: 100%;
}

.registr {
    width: 50%;
    left: 40%;
    top: 20%;
    margin: 0 auto;
    position: absolute
}