body {
    background-color: black;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}
#gifContainer {
    width: 50%;
    aspect-ratio: 1/1;
    position: relative;
}
#gifContainer img {
    max-width: 100%;
    height: auto;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}