html {
  max-width: 80ch;
  padding: 3em 1em;
  margin: auto;
  line-height: 1.75;
  font-size: 1.25em;
}

h1,h2,h3,h4,h5,h6 {
  margin: 3em 0 1em;
  font-family: "Helvetica Neue", "Arial", sans-serif;
}

p,ul,ol {
  margin-bottom: 2em;
  color: #1d1d1d;
  font-family: "Helvetica Neue", "Arial", sans-serif;
}

body {
  text-align: center;
}

header::after {
  content: '';
  display: table;
  clear: both;
}

.container {
  margin: 0 auto;
}

.logo {
  float: left;
  width: 25ch;
}

nav{
  float: right;
}

nav ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

nav li { 
  display: inline-block;
  margin-left: 20px;
}

nav a {
  color: #444;
  text-decoration: none;
  text-transform: uppercase;
  font-size: 16px;
  font-weight: 700;
}

nav a:hover {
  color: #000;
}