#loading-box {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: white;
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
}

.loading {
    display: flex;
    gap: 6px; /* 调整条之间的间距 */
    align-items: center;
    height: 30px;
}

.loading-bar {
    width: 4px;
    height: 18px;
    border-radius: 4px;
    animation: loading 1s ease-in-out infinite;
}

.loading-bar:nth-child(1) {
    background-color: #3498db;
    animation-delay: 0s;
}
.loading-bar:nth-child(2) {
    background-color: #c0392b;
    animation-delay: 0.15s;
}
.loading-bar:nth-child(3) {
    background-color: #f1c40f;
    animation-delay: 0.3s;
}
.loading-bar:nth-child(4) {
    background-color: #27ae60;
    animation-delay: 0.45s;
}

@keyframes loading {
    0%, 100% {
        transform: scaleY(1);
    }
    50% {
        transform: scaleY(2);
    }
}