style.css

:root {
	font-family: "Open Sans", sans-serif;
}

body {
	display: grid;
	place-items: center;
}

h1 {
	border: 2px solid black;
	border-bottom: none;
	border-top-left-radius: 1rem;
	border-top-right-radius: 1rem;
	padding: 1rem 4rem;
	background: #eee;
}

label,
input,
button {
	display: block;
}

label[for="toggle-password-visibility"] {
	margin-left: 0.25rem;
}

.checkbox-group {
	font-size: 0.75rem;
	display: flex;
}

form {
	padding: 4rem;
	padding-top: 3rem;
	border: 2px solid;
	border-bottom-left-radius: 1rem;
	border-bottom-right-radius: 1rem;
}

form > * + * {
	margin-top: 1.25rem;
}

.input-group > * + * {
	margin-top: 0.5rem;
}

button {
	cursor: pointer;
}

.show-password {
	border: none;
	background: none;
	font-size: 0.75rem;
}
.show-password:hover {
	text-decoration: underline;
}

button[type="submit"] {
	margin-top: 2rem;
	background: black;
	color: white;
	border: none;
	padding: 0.75rem 1rem;
	font-weight: bold;
}

.requirement {
	font-size: 0.7rem;
	color: darkslategrey;
}

.display-error {
	color: red;
}