blink css button

.flash-button{
	background:blue;
	padding:5px 10px;
	color:#fff;
	border:none;
	border-radius:5px;
	
	animation-name: flash;
	animation-duration: 1s;
	animation-timing-function: linear;
	animation-iteration-count: infinite;

	//Firefox 1+
	-webkit-animation-name: flash;
	-webkit-animation-duration: 1s;
	-webkit-animation-timing-function: linear;
	-webkit-animation-iteration-count: infinite;

	//Safari 3-4
	-moz-animation-name: flash;
	-moz-animation-duration: 1s;
	-moz-animation-timing-function: linear;
	-moz-animation-iteration-count: infinite;
}

@keyframes flash {  
    0% { opacity: 1.0; }
    50% { opacity: 0.5; }
    100% { opacity: 1.0; }
}

//Firefox 1+
@-webkit-keyframes flash {  
    0% { opacity: 1.0; }
    50% { opacity: 0.5; }
    100% { opacity: 1.0; }
}

//Safari 3-4
@-moz-keyframes flash {  
    0% { opacity: 1.0; }
    50% { opacity: 0.5; }
    100% { opacity: 1.0; }
}