html {
	height: 100vh;
	scrollbar-base-color: green;
}

body {
  	background : linear-gradient(#2441B4, #31128b) no-repeat fixed;
	margin: 0;
	overflow-y: hidden;
}

main {
	overflow: hidden;
	box-sizing: border-box;
	margin: 0 auto;
	width: 80%;
	overflow: auto;
	height: 86vh;
	padding-right: 25px;
}

main h1 {
  	margin: 0;
  	font-family: 'Righteous', cursive;
}

main h2 {
  	font-family: 'Righteous', cursive;
}

main div {
  	padding: 25px;
  	margin-bottom: 25px;
  	background-color: rgba(255, 255, 255, 0.8);
  	border-radius: 50px;
}

main div {
  	margin-top: 25px;
}

.title {
  	text-align: center;
  	font-size: 3em;
}

a {
  	text-decoration: none;
  	color: black;
}

a:hover {
  	text-decoration: underline;
  	color: black;
}

.algorithms {
  	padding: 0;
  	background: none;
	justify-content: space-around;
	width: auto;
	display: flex;
}

p {
  	font-family: sans-serif;
}

#sorting, #search, #hash {
	width: 22%;
	text-align: center;
	padding: 0px;
	height: auto;
}

.pictures {
	width: auto;
	height: 280px;
	margin: 0;
	border-top-left-radius: 0;
	border-top-right-radius: 0;
}

main img {
	max-width: 100%;
	height: auto;
}

.license {
	font-size: 0.9em;
	opacity: 0;
	padding: 0;
	margin: 0;
	transition: 1s ease all;
}

.pictures:hover .license {
	opacity: 1;
}