style.css

body {
	margin: 0;
	padding: 0;
	font-family: Arial, sans-serif;
}

header {
	background-color: #333;
	color: #fff;
	padding: 10px;
	text-align: center;
}

main {
	min-height: 100vh;
}

.background-image {
	background-image: url('running.png');
	background-size: cover;
	background-position: center;
	height: 100%;
	display: flex;
	align-items: center;
	justify-content: center;
}

.run-info {
	padding: 50px;
	background-color: #fff;
	text-align: center;
}

img {
    display: block;
    width: 50%;
    margin-left: auto;
    margin-right: auto;
  }