nav .navbar .links li:first-child a {
  color: #ffffff;
}

nav .navbar .links li:nth-child(6) a {
  color: #f6dc69;
}

.header-banner {
  max-width: 1800px;
  margin: auto;
  height: 300px;
  background: linear-gradient(to top, rgba(3, 56, 72, 0.968), rgba(3, 60, 122, 0.301), rgba(4, 68, 104, 0.889)), url(../images/gallery.jpg);
  background-position: center;
  background-size: 100% 200%;
  text-align: center;
  color: #ffffff;
  position: relative;
  padding-top: 80px;

}

.header-banner h1 {
  font-size: 45px;
  font-weight: bold;
  place-items: center;
}


.sec1a {
  max-width: 1800px;
  margin: auto;
  padding: 20px;
  background-color: #072031;
  padding-bottom: 30px;

}


.sec1a h1 {
  text-align: center;
  width: 100%;
  font-size: 35px;
}

.sec1a .sec1a-container {
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-evenly;
  margin-bottom: 30px;
}

.sec1a .sec1a-container img {
  width: 30%;
  margin-top: 30px;
  border: 5px solid white;
}






@media screen and (max-width: 900px) {
  .header-banner {
    background-size: 120% 100%;
    height: 220px;
    margin-top: -50px;
    padding-top: 150px;
  }

  .header-banner h1 {
    font-size: 30px;
    color: #fefefe;
  }



}


@media screen and (max-width: 400px) {
  .sec1a .sec1a-container img {
    width: 100%;
  }

}