body {
	background: var(--kolor-czarny);
	color: var(--kolor-bialy);
	min-height: 100vh;
	font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
	margin: 0;
	padding: var(--o-2) var(--o) var(--o-4);
	display: flex;
	justify-content: center;
	align-items: center;
	text-align: center;
	position: relative;
}

article {
	width: 600px;
	max-width: 100%;
}

.logo {
	width: 150px;
	margin: auto;
}
.logo img {
	width: 200px;
	height: auto;
	margin: 0 auto;
	display: block;
	animation: logo 4s ease-in-out infinite;
	filter: drop-shadow(0 0 30px rgba(45, 181, 105, 0.4));
}

@keyframes logo {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-20px);
  }
}

h1 {
	font-size: 3rem;
	font-weight: 300;
	letter-spacing: 0.1em;
	margin: var(--o-2) 0;
}




p {
	margin: 0;
	line-height: 1.5;
}
a {
	display: block;
	margin: var(--o-2) auto;
	font-size: 120%;
	letter-spacing: 1px;
}
a span {
	font-size: 120%;
}







footer {
	position: absolute;
	padding: 0 0 var(--o-2);
	bottom: 0;
}