@if $use-shake == true { @-webkit-keyframes shake { 0%, 100% {-webkit-transform: translateX(0);} 10%, 30%, 50%, 70%, 90% {-webkit-transform: translateX(-$base-distance);} 20%, 40%, 60%, 80% {-webkit-transform: translateX($base-distance);} } @-moz-keyframes shake { 0%, 100% {-moz-transform: translateX(0);} 10%, 30%, 50%, 70%, 90% {-moz-transform: translateX(-$base-distance);} 20%, 40%, 60%, 80% {-moz-transform: translateX($base-distance);} } @-o-keyframes shake { 0%, 100% {-o-transform: translateX(0);} 10%, 30%, 50%, 70%, 90% {-o-transform: translateX(-$base-distance);} 20%, 40%, 60%, 80% {-o-transform: translateX($base-distance);} } @keyframes shake { 0%, 100% {transform: translateX(0);} 10%, 30%, 50%, 70%, 90% {transform: translateX(-$base-distance);} 20%, 40%, 60%, 80% {transform: translateX($base-distance);} } .shake { @include animate-prefixer(animation-name, shake); } }