html, body
{
    overflow: hidden;
	margin: 0;
	padding: 0;
    font-family: arial, helvetica, roboto;
	font-size: 35px;
	color: white;
	text-shadow: 2px 2px #00000088;
	font-weight: bold;
}

.container {
    overflow: hidden;
}

.ad-box {
	width: 500px;
    height: 305px;
	overflow: hidden;
}

.ad-box img {
	max-width: 100%;
}

.ad-box-anim {
    animation-name: efekt;
    animation-duration: 0.5s;
	animation-fill-mode: forwards;
}

@keyframes efekt {
    0% {
        height: 305px;
    }
    100% {
		height: 0px; 
    }
}