body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: #000;
    margin: 0;
    font-family: sans-serif;
}

.rainbow-text {
    font-size: 5rem;
    font-weight: bold;
    display: flex;
}

.letter {
    display: inline-block;
    animation: jump 1s infinite;
    position: relative;
}

@keyframes jump {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

#okButton {
    margin-top: 20px;
    padding: 10px 20px;
    font-size: 1.5rem;
    background-color: #333;
    color: #fff;
    border: none;
    cursor: pointer;
    border-radius: 5px;
    display: inline-flex;
    align-items: center;
}

#okButton img {
    margin-right: 10px;
}