body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #1e1e1e url('https://www.transparenttextures.com/patterns/diagmonds.png');
  color: #ccc;
}

a {
  color: #9ecfff;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

header {
  background: #1b2b1b;
  padding: 20px;
  text-align: center;
  color: #7fcf99;
  font-size: 2em;
  text-shadow: 1px 1px #000;
}

nav {
  background: #2e2e2e;
  padding: 10px;
  text-align: center;
  font-size: 1.1em;
}

nav a {
  color: #ccc;
  margin: 0 10px;
}

nav a:hover {
  color: #fff;
}

.container {
  display: flex;
  max-width: 1000px;
  margin: 20px auto;
  background: #3a3a3a;
  box-shadow: 0 0 10px #000;
}

.main {
  flex: 3;
  padding: 20px;
}

.sidebar {
  flex: 1;
  background: #2e2e2e;
  padding: 20px;
  font-size: 0.9em;
}

.sidebar img {
  width: 100%;
  margin-bottom: 10px;
}

footer {
  text-align: center;
  padding: 15px;
  background: #222;
  font-size: 0.85em;
  color: #aaa;
}

h1, h2 {
  color: #fff;
}

ul {
  padding-left: 20px;
}

.profile-pic {
  float: right;
  margin-left: 20px;
  width: 200px;
  border: 1px solid #555;
}

hr {
  border: 0;
  height: 1px;
  background: #555;
  margin: 20px 0;
}