header {
  position: relative;
  background-color: #fff;
  color: black;
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-top: 20px;
  margin-bottom: 40px;
}

header::after {
  content: '';
  position: absolute;
  bottom: -20px;
  left: 0;
  width: 100%;
  height: 5px; 
  background: linear-gradient(to right, #002D72 50%, #EF3340 50%);
}

  
  .logo {
    font-size: 24px;
    font-weight: bold;
    text-align: center;
    margin-bottom: 10px;
  }
  
  .nav {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    justify-content: center;
  }
  
  .nav a {
    color: black;
    text-decoration: none;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 5px;
  }
  
  .nav a:hover {
    text-decoration: underline;
  }
  