.content{width:100%;height:100%;position:fixed;top:0;left:0;transition:filter .3s ease}.content.blurred{filter:blur(6px) grayscale(1);pointer-events:none}.spinner{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);z-index:100000;opacity:0;transition:opacity .3s ease}.spinner.visible{opacity:1}