MediaWiki:BackToTopButton.css

border-right: none; float: right; margin-top: -1px; }
 * 1) backtotop {

height: 20px; }
 * 1) backtotop button {

border-radius: 100%; bottom: 3%; display: flex; height: 50px; position: fixed; right: 3%; text-align: center; width: 50px; z-index: 5000102; cursor: pointer; }
 * 1) BackToTopBtn div {

display: block; fill: currentColor; margin: auto; transform: scaleY(-1); }
 * 1) BackToTopBtn div > svg {