body {
  height: 100%;
  background: linear-gradient(#b2e0eb,#58a3e0);
  background-attachment: fixed;
}

p {
  color: #0e1e6e;
  font-family: "Exo";
}
  
#title h1 {
  color: #0e1e6e;
  font-family: "Orbitron";
  margin: 150px 625px 0;
  font-size: 32px;
  font-weight: bold;
  position: ;
}

#container {
  width: 700px;
  height: 500px;
  margin: 0 auto;
  position: relative;
}

#content {
  width: 550px;
  height: 450px;
  margin: 0;
  padding: 50px;
  border: solid 1px #0e1e6e;
  border-radius: 20px;
  background-color: #d8edf2;
  color: #0e1e6e;
  font-family: "Exo";
  position: fixed;
  overflow-y: auto;
  overflow-x: hidden;
  display: flex;
}

#sidebar {
  width: 50px;
  margin: 50px 0px 50px 0px;
  position: fixed;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

#left-side {
  width: 150px;
  height: 300px;
  margin: -20px 0 0 625px;
  padding: 50px;
  border: solid 1px #0e1e6e;
  border-radius: 20px;
  background-color: #d8edf2;
  color: #0e1e6e;
  font-family: "Exo";
  position: fixed;
}

.tabs {
  display: block;
  width: 50px;
  height: 2em;
  background-color: #0e1e6e;
  border-radius: 10px 0px 0px 10px;
  margin: 10px 0px 10px -70px;
  padding: .5em 10px .25em 10px;
  color: white;
  font-family: "Exo";
  text-align: center;
  font-size: 12px;
  font-weight: bold;
  text-decoration: none;
  transition-duration: 0.5s;
}
  
.tabs:hover{
  background-color: white;
  color: #0e1e6e;
  width: 50px;
  height: 2em;
  border-radius: 10px 0px 0px 10px
}

footer {
  position: fixed;
  color: #0e1e6e;
  font-family: "Exo";
  font-size: 18px;
  margin: 550px 500px;
  font-weight: bold;
}

footer a {
  color: #0e1e6e;
}

footer a:hover {
  color: white;
  transition-duration: 0.5s;
}

.caption {
  visibility: hidden;
}

.caption:target {
  visibility: visible;
}