app.css

@import url('https://fonts.googleapis.com/css2?family=Roboto:ital@1&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Lobster&display=swap');
:root {
	--color: #333;
	--background: #ecf5ff;
	background: var(--background);
	font-size: 62.5%;
}

* {
	box-sizing: border-box;
	font-family: 'Roboto', sans-serif;
	color: var(--color);
	margin: 0;
	padding: 0;
}

h1, h2, h3, h4 {
	margin-bottom: 1rem;
}
h1 {
	font-size: 5.4rem;
	color: #56a5eb;
	margin-bottom: 5rem;
	font-family: 'Lobster', cursive;
}
h2 {
	font-size: 3rem;
	margin-bottom: 4rem;
}
.container {
	width: 100vw;
	height: 100vh;
	display: flex;
	justify-content: center;
	align-items: center;
	max-width: 70rem;
	margin: 0 auto;
}
.flex-column {
	display: flex;
	flex-direction: column;
}
.flex-center {
	display: flex;
	justify-content: center;
	align-items: center;
}

.btn {
	font-size: 1.8rem;
	border: 1px solid #56a5eb;
	width: 17rem;
	padding: 1rem 0;
	text-align: center;
	text-decoration: none;
	color: #56a5eb;
	background: white;
	margin-bottom: 1rem;
}
.btn:hover {
	cursor: pointer;
	box-shadow: 0 0.4rem 1.4rem 0 rgba(86, 185, 235, .5);
	transform: translateY(-0.1rem);
	transition: transform 150ms;
}