body {
    animation: bgColorChange 10s infinite;
}

@keyframes bgColorChange {
    0% { background-color: #ff9999; }
    33% { background-color: #99ccff; }
    66% { background-color: #99ff99; }
    100% { background-color: #ff9999; }
}

#warning-icon {
    width: 100px;
    height: 100px;
    margin-bottom: 20px;
}