.class::before { /* must have content */ content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: black; opacity: 0.6; }
.class::before { /* must have content */ content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: black; opacity: 0.6; }