header {
	/*
	background: white url(res/images/header-background.jpg) no-repeat;
	background-size: cover;
	*/
	display: flex;
	flex-wrap: wrap;
	justify-content: center;
	align-content: center;
	height: 15vh;
}
header img {
	height: 10vh;
}
footer {
	background-color: #2f3478;
	padding: 5vh 0;
	color: white;
	display: flex;
	justify-content: center;
	align-content: center;
	height: 15vh;
	box-sizing: border-box;
	flex-wrap: wrap;
}
a {
	color: #17209e;
    border-bottom: 1px dotted #17209e;
    text-decoration: none;
}
footer a {
	color: white;
	border-color: #23a5de;
}
html, body {
	margin: 0;
	font-family: 'Segoe UI', Tahoma, Roboto, sans-serif;
}
content {
	display: flex;
	flex-wrap: wrap;
	min-height: 70vh;
	align-content: center;
}
content > div {
	text-align: center;
	display: block;
	width: 100%;
	justify-content: center;
}
content span.call-title {
    margin-top: 20px;
}
content img {
	height: 10vh;
	min-height: 15vw;
}