style.css

/* Styles change all the time, why not improve on the design.
You're welcome to introduce changes to the design (color, layout ...),
as well as fix a bug you might have noticed and extend on responsiveness. 
*/

*,
*::after,
*::before {
	padding: 0;
	margin: 0;
	box-sizing: border-box;
}

body {
	font-size: 3rem;
	color: #fcfcfa;
	background-color: #232f5f;
	font-family: Arial, Helvetica, sans-serif;
}

main {
	display: flex;
	height: 100vh;
	text-align: center;
	align-items: center;
	flex-direction: column;
	justify-content: center;
}

.main-title {
	margin: 0;
}

.main-description {
	opacity: 80%;
	padding: 1rem;
	font-size: 1.5rem;
	text-align: center;
}

.author {
	font-size: 1.1rem;
}
.author a {
	color: black;
	text-decoration: none;
}

.main-button {
	color: black;
	margin-top: 2%;
	font-size: 1.2rem;
	padding: 1rem 2rem;
	text-decoration: none;
	background-color: #fcfcfa;
}

.contact-links {
	display: flex;
}

.contact-links li {
	list-style-type: none;
}

.contact-links li a {
	opacity: 70%;
	padding: 0.7rem;
	text-decoration: none;
	color: #fcfcfa;
}

.contact-links li a:hover,
.contributor-container a:hover {
	opacity: 100%;
	color: white;
}

footer {
	display: flex;
	font-size: 1.3rem;
	text-transform: capitalize;
	justify-content: space-between;
	position: absolute;
	align-items: center;
	bottom: 2rem;
	width: 100%;
	padding-left: 4rem;
	padding-right: 4rem;
}

.contributor-container {
	padding: 0.7rem;
	padding-bottom: 1.3rem;
}

.contributor-container a {
	opacity: 70%;
	margin-left: 10px;
	color: #fcfcfa;
	text-decoration: none;
}

.contributor-container a:hover {
	text-decoration: underline;
	text-underline-offset: 10px;
}

@media screen and (max-width: 600px) {
	body {
		font-size: 1.5rem;
	}

	.main-title {
		padding: 2rem;
	}

	.main-description {
		padding-bottom: 2rem;
	}

	.contact {
		padding: 0;
		right: 0rem;
		width: 100%;
		align-items: center;
	}

	.contact-links {
		margin: auto;
		text-align: center;
		justify-content: center;
	}

	.contact-links li {
		padding: 0;
	}

	.contact-links li a {
		padding: 0.8rem;
	}

	footer {
		display: block;
	}

	.contributor-container {
		width: 100%;
		font-size: 1rem;
	}
}