body {
  background-color: rgba(0, 0, 0, 0);
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
}




header {
  background-color: rgb(240, 240, 240);
  height: 132px;
  text-align: center; 
} 

nav {
  background-color: rgba(155, 155, 155, 0.5);
  height: 30px;
  text-align: center;
  margin-top: 20px;
  margin-bottom: 20px;
  padding-top: 14px;
  padding-bottom: 14px;
} 

nav a{
  text-decoration: none;
  font-size: 24px;
  padding-left: 10px;
  padding-right: 10px;
  font-family: 'Times New Roman', Times, serif;
}

.container {
  margin-left: auto;
  margin-right: auto;
}

main,
footer {
  width: 90%;
}

main {
  background-color: rgba(0, 0, 0, 0.5);
  height: min-content;
  margin: auto;
} 

footer {
  background-color: rgba(155, 155, 155, 0.5);
  height: 118px;
  margin: auto;
  margin-top: 20px;
  margin-bottom: 20px;
  text-align: center;
} 

footer a {
  font-size: 150%;
  padding-top: 50%;
  text-decoration: none;
}

footer a:hover {
  color: lightgray;
  cursor: pointer;
  text-decoration: underline;
}

h1 {
  font-size: 100px;
  font-family: 'Times New Roman', Times, serif;

  display: block;
  text-overflow: ellipsis;
  white-space: nowrap;
  overflow: hidden;
}

span.aoca {
  font-size: 30px;
}

a {
  color: black;
  cursor: pointer;
}

a:hover {
  color: white;
  opacity: 0.7;
}

.pdf-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
}

.pdf-images,
.drawings {
  justify-content: center;
}

.pdf-images {
  width: 90%;
}