body, header, nav, main, footer, img, h1, h2, h3, ul {
  margin: 0;
  padding: 0;
  border: 0;
}

/* Body */
body {
  font-family: Arial, sans-serif;
  background-color: #e6f0ed;
  color: #333;
}

/* Images */
img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
  border-radius: 10px;
}

/* Header logo */
header img {
  width: 450px;      
  max-width: none;   
  display: block;
  margin: 0 auto;
}

/* Wrapper */
#wrapper {
  width: 100%;
  margin: 0 auto;
}

/* Header */
header {
  background-color: #7b4b3a;
  color: #fff;
  text-align: center;
  padding: 1.5em 0;
}

/* Navigation */
nav ul {
  list-style-type: none;
  background-color: #a0522d;
  text-align: center;
  padding: 0;
  margin: 0;
}

nav ul li {
  display: inline-block;
}

nav ul li a {
  display: inline-block;
  color: #fff;
  padding: 10px 20px;
  text-decoration: none;
}

nav ul li a:hover {
  background-color: #7b4b3a;
}

/* Main */
main {
  padding: 20px;
  text-align: center;
}

main h3 {
  color: #7b4b3a;
}

/* Footer */
footer {
  background-color: #7b4b3a;
  color: #fff;
  text-align: center;
  padding: 10px 0;
  font-size: 0.9em;
}

/* Responsive Design */
@media (max-width: 768px) {
  header img {
    width: 200px;
  }

  nav ul li a {
    display: block;
    padding: 10px;
  }

  main {
    padding: 10px;
  }
}