html, body {
    margin: 0;
    padding: 0;
}

gltf-webgl {
    display: block;
    width: 100vw;
    height: 100vh;
    position: relative;
}
gltf-webgl .unity-canvas {
    position: absolute;
    width: 100%;
    height: 100%;
}
gltf-webgl .file-selector-container {
    position: absolute;
    top: 0;
    right: 0;
    background: white;
    padding: 10px;
    border-bottom-left-radius: 5px;
    box-shadow: 0 0 5px rgba(0, 0, 0, 0.5);
}