html, body {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    overflow: hidden;
}

.loader-container {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    background: black;
    padding: 20px;
    border-radius: 10px;
}

.progress-bar {
    width: 200px;
    height: 10px;
    background: #444;
    border-radius: 5px;
    overflow: hidden;
}

.progress-fill {
    width: 0%;
    height: 100%;
    background: lime;
    animation: progress-animation 2s infinite linear;
}

@keyframes progress-animation {
    0% { width: 0%; }
    50% { width: 100%; }
    100% { width: 0%; }
}