/* 修改placeholder样式，兼容性 新版火狐，IE10+ */

         .login-input::-webkit-input-placeholder {

             color: #000;

             font-size: 0.3rem;

             transition: .5s;

             transform-origin: left top;

         }

         .login-input::-moz-placeholder {

             color: #000;

             font-size: 0.3rem;

             transition: .5s;

             transform-origin: left top;

         }

         .login-input:-ms-input-placeholder {

             color: #000;

             font-size: 0.3rem;

             transition: .5s;

             transform-origin: left top;

         }

         /* 兼容性 新版火狐，IE10+ */

         .login-input:focus::-webkit-input-placeholder {

             color: #aaa;

             transform: scale(0.7) translateY(-0.28rem);

         }

         .login-input:focus::-moz-placeholder {

             color: #aaa;

             transform: scale(0.7) translateY(-0.28rem);

         }

         .login-input:focus:-ms-input-placeholder {

             color: #aaa;

             transform: scale(0.7) translateY(-0.28rem);

         }