* {
  font-family: arial;
}

header {
  text-align: center;
  border: 2px solid gray;
}

footer {
  vertical-align: bottom;
  text-align: center;
  border: 2px solid gray;
}

section nav ul li {
  position: relative;
  display: inline-block;
  text-align: center;
  width: 10%;
  margin-left: 100px;
}

img {
  height: auto;
  width: auto;
  max-width: 300px;
  max-height: 300px;
  display: block;
  margin-left: auto;
  margin-right: auto;
}
* {
  color: #404040;
  font-family: arial;
  background-color: #75a3a3;
}

header {
  text-align: center;
  border: 2px solid #993333;
}

footer {
  vertical-align: bottom;
  text-align: center;
  border: 2px solid #993333;
}

section nav ul li {
  position: relative;
  display: inline-block;
  text-align: center;
  width: 10%;
  margin-left: 100px;
}

img {
  height: auto;
  width: auto;
  max-width: 300px;
  max-height: 300px;
  display: block;
  margin-left: auto;
  margin-right: auto;
}

a {
  color: #e5e600;
}
Add more color and fix links
Add more color and fix links
