.animated-bg{background-color:#eee;background-image:linear-gradient(135deg,#eee,#ccc,#fff,#eee);background-size:300% 300%;animation:30s linear infinite subtle-shift-toned}@keyframes subtle-shift-toned{0%{background-position:0%}50%{background-position:100%}to{background-position:0%}}