body {	
    font-family:	Verdana, Myriad Web, Syntax, sans-serif;
    margin: 1em;
}

header {
    height: 150px;
    display: grid;
    grid-template-columns: 200px 1fr;
}
header img {
    height: 150px;
}
header h1 {
    color: black;
}

pre {
    font-family: 'Courier New', Courier, monospace;
    background-color: #ccc;
    border: 1px solid #000;
    padding: 1em;
}

aside {
  background-color: firebrick;
  color: white;
  border: 1px solid black;
  margin-left: 20%;
  padding: 1em;

}

.challenge {
    font-style: italic;
    color: red;
    padding: 1em;   
}