header {
  background: #ffffff;
  padding: 20
}

.caixa {
  width: 940px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

nav {
  top: 25px;
  left: 20px;
}

nav li {
  display: inline;
  margin: 0 0 0 20px;
}

nav a {
  text-transform: uppercase;
  color: #24486e;
  font-weight: bold;
  font-size: 18px;
  text-decoration: none;
}