body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    background-color: #f0f0f0;
    font-family: Arial, sans-serif;
}

.container {
    border: 2px solid #333;
    padding: 10px;
    background-color: #fff;
}

.gate-gif {
    max-width: 100%;
    height: auto;
    display: block;
}