*, ::before, ::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  
}
html {
	width: 100vw;
	height: 100vh;
	font-size: 16px;
	line-height: 1.5;
}

body {
  width: 100%;
  height: 100%;
  color: inherit;
}

body {
  background: #ddd;
  margin: 0;
  font-family: sans-serif;
}
header h1 {
	text-align: center; 
	margin-top: 5px;
}

header p {
	padding: 10px 20px; 
	font-size: 1.5em;
}

picture {
	margin: 0 auto; 
	width: 100%;
}

img {
  margin: 10px 20px;	
  width: auto;
  border: 3px solid darkblue;
}