.header ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
  overflow: hidden;
  background-color: #52b1c8;
}

.header li {
  float: left;
}

.header li a {
  padding: 30px;
  text-decoration: none;
  color: black;
}

.header a:hover {
  background-color: #3a7f90;
}

body {
    background-color: #22424a;
    margin: 0 25%;
    padding: 0 5px;
}

.corpo {
    background-color: #3a7f90;
    padding: 1px 10px;
}