.model-viewer-3d {
    width:100%;
    height:100%;
    position:relative;
}

.model-viewer-3d canvas {
    width: 100%;
    height: 100%;
    display: block;
}

#loading-screen {
    position: absolute;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
	z-index: 2;
	width: 100%;
	height: 100%;
	background-color: #000000;
	opacity: 1;
 	transition: 1s opacity;
}

#loading-screen.fade-out {
    opacity: 0;
}

#loader { 
    width: 2rem;
    height: 2rem;
    margin: 2rem;
    border-radius: 50%;
    border: 0.3rem solid rgba(151, 159, 208, 0.3);
    border-top-color: #979fd0;
    animation: 1.5s spin infinite linear;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}