.hidden{opacity:0}.visible{opacity:1}.fadeIn{animation-name:fade-in;animation-duration:3s;animation-direction:normal}.fadeOut{animation-name:fade-out;animation-duration:3s;animation-direction:normal;opacity:0}@keyframes fade-in{0%{opacity:0}to{opacity:1}}@keyframes fade-out{0%{opacity:1}to{opacity:0}}