.message-alert{position:fixed;top:-100px;left:50%;width:90%;max-width:480px;-webkit-transform:translateX(-50%);transform:translateX(-50%);-webkit-transition:all .5s cubic-bezier(.5,0,.5,1);transition:all .5s cubic-bezier(.5,0,.5,1);z-index:1100}.message-alert.showing{top:30px}.message-alert .alert{font-size:16px}