body {
  margin: 0;
  width: 90%;
  margin-left: auto;
  margin-right: auto;
  font-family: Arial, sans-serif;
  color: white;
  background-color: rgba(60, 60, 60, 0.9);
}

header img {
  width: 100%;
  object-fit: cover;
  display: block;
}

h1, h2 {
  text-shadow: 4px 6px 5px gray;
  color: white;
}

nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

nav a {
  display: block;
  background-color: #2c3e50;
  line-height: 2.8em;
  text-decoration: none;
  text-align: center;
  color: white;
}

nav a:hover {
  background-color: #1abc9c;
  color: white;
}

main {
  padding: 20px;
  margin-top: 35px;
}

main > img[alt="Under Maintenance"] {
  display: block;
  margin: 0 auto;
}

body > footer {
  clear: both;
  text-align: center;
  padding: 15px;
  color: white;
  background-color: rgba(60, 60, 60, 0.95);
}

.gallery {
  display: flex;
  flex-wrap: wrap;
}

.imgGallery {
  flex: 25%;
  max-width: 25%;
  height: 200px;
  overflow: hidden;
}

.imgGallery img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}


.vacations-title {
  padding-left: 20px;
}
main img {
  max-width: 100%;
  height: auto;
}


@media only screen and (max-width: 768px) {
  .imgGallery {
    flex: 50%;
    max-width: 50%;
  }
}

@media only screen and (max-width: 480px) {
  body {
    width: 100%;
    margin: 0;
  }

  nav li {
    float: none;
    width: 100%;
    font-size: x-large;
    margin-bottom: 6px;
  }

  nav a {
    line-height: 2.2em;
    padding: 8px 0;
  }

  header img {
    height: 130px;
  }

  main > img {
    width: 90%;
    float: none;
  }

  .imgGallery {
    flex: 100%;
    max-width: 100%;
  }
}

@media only screen and (min-width: 769px) {
  html {
    background-image: url("background.jpg");
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
  }

  nav li {
    display: block;
    width: 20%;
    float: left;
  }

  main > img {
    width: 25%;
    float: right;
  }
}