Delayed message with CSS3

If you need to announce a new product or any new messages to visitors or to get their attention, this is the perfect solution. This appears as a new element after the page has been loaded at the top (customize-able, this will get the user attention more efficiently and this is not a pop-up, so it won't get blocked by browsers and other programs. This does not use any JavaScript or JQuery it is just simple CSS3 with -webkit- which is supported by chrome and -moz- for mozilla Currently this works only with firefox ,chrome and safari only.
If IE 10 supports any of these then it will work in it too.

The Mark Up

 <div class="slide-top">
       <p class="message">Hello you are watching a delayed message </p>
 </div>

The CSS

The style for the delayed message box

.slide-left{
	line-height: 24px;
	font-size: 11px;
	background: rgba(255, 255, 255, 1);
	text-transform: uppercase;
	position: fixed;
	top: 0px;
	left: 0px;
	width: 100px;
	height:100%;
	box-shadow: 1px 0px 2px rgba(0,0,0,0.2);
	-webkit-animation: slideOut 0.5s ease-in-out 0.3s backwards;
	-moz-animation: slideOut 0.5s ease-in-out 0.3s backwards;
	-o-animation: slideOut 0.5s ease-in-out 0.3s backwards;
	-ms-animation: slideOut 0.5s ease-in-out 0.3s backwards;	
}

For animation

@-webkit-keyframes slideOut{
	0%{left:-30px; opacity: 0;}
	100%{left:0px; opacity: 1;}
}
@-moz-keyframes slideOut{
	0%{left:-30px; opacity: 0;}
	100%{left:0px; opacity: 1;}
}
@-o-keyframes slideOut{
	0%{left:-30px; opacity: 0;}
	100%{left:0px; opacity: 1;}
}
@-ms-keyframes slideOut{
	0%{left:-30px; opacity: 0;}
	100%{left:0px; opacity: 1;}
}
@keyframes slideOut{
	0%{left:-30px; opacity: 0;}
	100%{left:0px; opacity: 1;}
}