body {
                margin: 0;
                padding: 0;
                background: #000;
                overflow: hidden;
            }

            #fulllscreen {
                position: fixed;
                top: 0;
                right: 0;
                bottom: 0;
                left: 0;
                background-color: black;
                display: flex;
                justify-content: center;
                align-items: center;
            }

            #fulllscreen canvas {
                object-fit: contain;
                max-height: 100%;
                max-width: 100%;
            }