* {
	box-sizing: border-box;
	font-family: sans-serif;
	margin: 0;
	padding: 0;
}
body {
	background-color: white;
	display: flex;
	flex-direction: column;
	height: 100vh;
	margin: auto;
	max-width: 1140px;
	padding: 10px;
}
h1 {
	font-size: 32px;
	font-weight: normal;
}
a {
	color: darkred;
	text-decoration: none;
}

header, main, footer {
	padding: 10px;
}
@media screen and (min-width: 720px) {
	header, main, footer {
		padding: 20px;
	}
}
nav {
	float: right;
}
main {
	border-bottom: darkred 2px solid;
	border-top: darkred 2px solid;
	display: flex;
	flex: 1;
	flex-direction: column;
	overflow: hidden;
}

form {
	margin: 10px 0;
}
form.horizontal {
	display: flex;
	gap: 10px;
	margin: 20px 0;
}
form.horizontal input {
	flex: 1;
}
form div {
	margin: 10px 0;
}
form div:last-of-type {
	margin-bottom: 20px;
}
label {
	display: inline-block;
	width: 90px;
}
input, button {
	border: grey 1px solid;
	border-radius: 5px;
	padding: 5px 10px;
	font-size: 1em;
}

ul {
	list-style-type: none;
	margin: 10px 0;
	overflow-y: auto;
}
li {
	margin: 10px 0;
}

.error {
	color: darkred;
	margin: 20px 0;
}