html, body{
	margin: 0;
	padding: 0;
	font-family:Arial, Helvetica, sans-serif;
}

a {
	text-decoration:none;
	color:hsl(206, 100%, 50%);
	transition:color 0.25s;
}

a:hover{
	color: hsl(358, 85.3%, 52%);
}

a:active{
	transition:color 0s;
	color: hsl(358, 85.3%, 20%);
}


/*for ad.html*/

body {
  animation: blink-animation 250ms steps(2, start) infinite;
}
@keyframes blink-animation {
	0% {
		background-color:hsl(0, 0%, 100%);
	}

	100% {
		background-color:hsl(0, 100%, 50%);
	}
}
main{
	max-width: 48em;
	margin:4rem;

}