header {
  top: 0;
  left: 0;
  width: 100%;
  padding: 12px 50px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #0d0f58;
  border-bottom: 2px solid #fff;
  position: fixed;
  z-index: 10000;
}

header .logo {
  color: #fff;
  font-weight: 700;
  text-decoration: none;
  font-size: 2em;
  text-transform: uppercase;
  letter-spacing: 2px;
}

header .logo:hover {
  color: #45a9c7;
}

header .logo span {
  color: #38bb35;
}

header ul {
  display: flex;
  justify-content: center;
  align-items: center;
}

header ul li {
  list-style: none;
  margin-left: 20px;
}

header ul li a {
  text-decoration: none;
  padding: 6px 15px;
  color: #fff;
  border-radius: 20px;
}

header ul li a:hover, header ul li a.active {
  background: #fff;
  color: #2b1055;
}