style.css

html, body {
    width: 100%;
    height: 100%;

    overflow: hidden;
    background-color: #191d22;
}

* {
    margin: 0;
    padding: 0;
}

main {
    width: 100%;
    height: 100%;

    display: flex;
    justify-content: center;
    align-items: center;

    flex-direction: column;
}

#cirno {
    height: 18rem;
    cursor: pointer;

    transition: all 0.5s ease;
}

#cirno:hover {
    height: 19rem;
}

#counter {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-weight: lighter;

    color: rgb(210, 225, 255);
}

@keyframes cirno-move {
    0% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-200px);
    }
    100% {
        transform: translateY(300px);
    }
}

.mini-cirno {
    width: 5rem;
    filter: brightness(0.9);
}

.funky {
    animation: cirno-move 2s ease-in-out;
}

#cirno-container {
    position: absolute;
    top: 90%;

    width: 100%;
    height: 10%;
}