.sign{-webkit-perspective:1300px;-moz-perspective:1300px;perspective:1300px}.sign>:first-child{-webkit-transform-style:preserve-3d;-moz-transform-style:preserve-3d;transform-style:preserve-3d;-webkit-transform:rotateX(-60deg);-moz-transform:rotateX(-60deg);-ms-transform:rotateX(-60deg);transform:rotateX(-60deg);-webkit-transform-origin:50% 0;-moz-transform-origin:50% 0;transform-origin:50% 0;opacity:0}.sign-transitions>:first-child{-webkit-transition:all .3s;-moz-transition:all .3s;transition:all .3s}.sign.show>:first-child{-webkit-transform:rotateX(0deg);-moz-transform:rotateX(0deg);-ms-transform:rotateX(0deg);transform:rotateX(0deg);opacity:1}