/* Variable */
:root {
  --primary-color: #b4e8cd;
}

/* Tag Selectors */
body {
  font-family: "Roboto", sans-serif;
  background-color: var(--primary-color);
  font-size: 16px;
}
a[target="_blank"] {
  background-color: white;
}

/* ID Selectors */
#title {
  background-color: yellowgreen;
  text-decoration: none;
  border: 5px dashed white;
  margin-top: 50px;
}
#headingInfo {
  background-color: #020024;
  background: linear-gradient(163deg, rgba(2, 0, 36, 1) 0%, rgba(3, 60, 51, 1) 20%, rgba(121, 97, 9, 1) 35%, rgba(6, 111, 77, 1) 56%, rgba(112, 131, 5, 1) 63%, rgba(3, 204, 37, 1) 75%, rgba(2, 207, 127, 1) 85%, rgba(0, 212, 255, 1) 100%);
}
#aquaticInfo {
  background-color: #9bf0ff;
}
#forestInfo {
  background-color: #d0ff9b;
}
#nasaInfo {
  background-color: #000;
  color: #fff;
}
#navLinks a:focus {
  background-color: red;
  color: white;
}
#navLinks a:link {
  color: red;
}
#navLinks a:visited {
  color: darkgreen;
}
#navLinks a:hover {
  background-color: yellowgreen;
}
#navLinks a:active {
  background-color: purple;
}


/* Class Selectors */
.heading {
  color: #ff0000;
  font-family: "Glass Antiqua", cursive;
  text-decoration: underline overline;
}
.text-center {
  text-align: center;
}
.info {
  border: 5px solid #afa37b;
  padding: 0.5em;
  margin-bottom: 1em;
  border-radius: 0.5em;
  box-shadow: 2px 2px 5px black;
}
.plainback {
  background-color: var(--primary-color);  
  padding: 0.5em;
}
.img-responsive {
  max-width: 400px;
}
.vid-responsive {
  max-width: 480px;
}