用CSS3实现登录和注册两个表单切换动画效果

实现动画的css3代码
@-webkit-keyframes animar_fondo {  from { -webkit-transform: scale(1) translate(0px);-moz-transform: scale(1) translate(0px);-ms-transform: scale(1) translate(0px);-o-transform: scale(1) translate(0px);transform: scale(1) translate(0px); }  to { -webkit-transform: scale(1.5) translate(50px);-moz-transform: scale(1.5) translate(50px);-ms-transform: scale(1.5) translate(50px);-o-transform: scale(1.5) translate(50px);transform: scale(1.5) translate(50px); }}@-o-keyframes identifier {  from { -webkit-transform: scale(1);-moz-transform: scale(1);-ms-transform: scale(1);-o-transform: scale(1);transform: scale(1); }  to { -webkit-transform: scale(1.5);-moz-transform: scale(1.5);-ms-transform: scale(1.5);-o-transform: scale(1.5);transform: scale(1.5); }}@-moz-keyframes identifier {  from { -webkit-transform: scale(1);-moz-transform: scale(1);-ms-transform: scale(1);-o-transform: scale(1);transform: scale(1); }  to { -webkit-transform: scale(1.5);-moz-transform: scale(1.5);-ms-transform: scale(1.5);-o-transform: scale(1.5);transform: scale(1.5); }}@keyframes identifier {  from { -webkit-transform: scale(1);-moz-transform: scale(1);-ms-transform: scale(1);-o-transform: scale(1);transform: scale(1); }  to { -webkit-transform: scale(1.5);-moz-transform: scale(1.5);-ms-transform: scale(1.5);-o-transform: scale(1.5);transform: scale(1.5); }}