.bg-image { position: relative; overflow: box; background-repeat: no-repeat; background-size: 500px; background-position: center center; } .vh-100 { height: 100vh !important; } .mask { position: absolute; top: 0; right: 0; bottom: 0; left: 0; width: 100%; height: 100%; overflow: hidden; background-attachment: fixed; } .measuretable th { background-color: antiquewhite; border: 1px solid; } .measuretable td{ border: 1px solid grey; text-align: center; } .checked { background-color: green; font-size: 1.5rem; color: white; } .unchecked { font-size: 1.5rem; }