#loading {
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    position: fixed;
    display: flex;
    opacity: 0.7;
    background-color: #fff;
    z-index: 1000;
    text-align: center;
    align-items: center;
}

#loading-image {
    position: absolute;
    top: 100px;
    left: 240px;
    z-index: 100;
}

.loader {
    border: 16px solid #f3f3f3; /* Light grey */
    border-top: 16px solid #3498db; /* Blue */
    border-radius: 50%;
    width: 120px;
    height: 120px;
    animation: spin 1s linear infinite;
    margin: 0 auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}