CSS3过渡-淡出效果

您可以改用转换：

.successfully-saved.hide-opacity{    opacity: 0;}.successfully-saved {    color: #FFFFFF;    text-align: center;    -webkit-transition: opacity 3s ease-in-out;    -moz-transition: opacity 3s ease-in-out;    -ms-transition: opacity 3s ease-in-out;    -o-transition: opacity 3s ease-in-out;     opacity: 1;}