body {
    font-family: monospace;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background: #000;
    color: #0f0;
    font-size: 3rem;
}

#counter {
    width: 250px;
    height: 60px;
    background-color: red;
    position: fixed;
    animation-name: myAnimation;
    animation-duration: 4s;
    animation-iteration-count: infinite;
}

@keyframes myAnimation {
    0% {
        background-color: red;
        left: 0px;
        top: 0px;
    }

    25% {
        background-color: yellow;
        left: 200px;
        top: 0px;
    }

    50% {
        background-color: blue;
        left: 200px;
        top: 100px;
    }

    75% {
        background-color: green;
        left: 0px;
        top: 100px;
    }

    100% {
        background-color: red;
        left: 0px;
        top: 0px;
    }
}

.debug-box {
    position: fixed;
    top: 20px;
    left: 20px;
    background: rgba(0, 0, 0, 0.75);
    color: #0f0;
    padding: 12px 16px;
    border-radius: 10px;
    font-size: 14px;
    line-height: 1.4;
    animation: bounce 4s ease-in-out infinite;
}

@keyframes bounce {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}