#startGame {
    position: relative;
    left: 50%;
    margin-top: 50px;
    transform: translate(-50%);
    width: 300px;
    height: 50px;
    max-width: 100%;
    max-height: 100%;
    color: rgb(135, 0, 161);
    border-color: rgb(135, 0, 161);
    transition-duration: 0.4s;
    font-weight: bold;
}

#startGame:hover {
    color: white;
    background-color: rgb(135, 0, 161);
}