html,
body {
    margin: 0;
    padding: 0;
    height: 100%;
    background-color: #7bb5ff;
    font-family: sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
}

#wrapper {
    position: relative;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
}

h1 {
    position: absolute;
    top: 5%;
    width: 100%;
    text-align: center;
    font-size: 3rem;
    color: #fff;
    text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.3);
    z-index: 2;
    margin: 0;
}

model {
    position: absolute;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: #7bb5ff;
    z-index: 0;
    display: block;
}

model img {
    display: block;
    max-width: 100%;
    max-height: 100%;
    margin: auto;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

#loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: gray;
    z-index: 999;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(0, 0, 0, 0.2);
    border-top: 4px solid #555;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 10px;
}

.description {
    position: absolute;
    bottom: 5%;
    width: 100%;
    text-align: center;
    font-size: 1rem;
    color: #fff;
    line-height: 1.6;
    z-index: 2;
    padding: 20 20px;
}

.description .credit {
    display: block;
    font-size: 0.75rem;
    opacity: 0.7;
    margin-top: 0.5rem;
    color: #e0e0e0;
}

.description .credit a {
    color: #e0e0e0;
    text-decoration: underline dotted;
}

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

    100% {
        transform: rotate(360deg);
    }
}