body {
	font-size: 2em;
}

main {
	margin: 2em;
	padding: 2em;
	border: 1px solid black;
}

blink {
    -webkit-animation: 2s linear infinite condemned_blink_effect; // for android
    animation: 2s linear infinite condemned_blink_effect;
}
@-webkit-keyframes condemned_blink_effect { // for android
    0% {
        visibility: hidden;
    }
    50% {
        visibility: hidden;
    }
    100% {
        visibility: visible;
    }
}
@keyframes condemned_blink_effect {
    0% {
        visibility: hidden;
    }
    50% {
        visibility: hidden;
    }
    100% {
        visibility: visible;
    }
}