@import url('https://fonts.googleapis.com/css?family=Mukta');
body {
  color: white;
  background-image: url("monika.png");
  background-repeat: no-repeat;
  background-attachment: fixed;
  background-position: right bottom;
  font-family: 'Mukta', sans-serif;
}

#container {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  background-color: #36558f;
  width: 100vw;
  height: 160px;
  box-shadow: 1px 1px 6px #36558f;
}

#theorycontainer {
  margin-top: 50px;
}

.centered {
  text-align: center;
}

@media only screen and (max-width: 479px) {
  #theorycontainer {
    margin-top: 10px;
  }
}

.btn {
  border: 0;
  -webkit-border-radius: 28;
  -moz-border-radius: 28;
  border-radius: 28px;
  text-shadow: 1px 1px 7px #666666;
  -webkit-box-shadow: 0px 1px 4px #666666;
  -moz-box-shadow: 0px 1px 4px #666666;
  box-shadow: 0px 1px 4px #666666;
  font-family: Arial;
  color: #ffffff;
  font-size: 15px;
  background: #3498db;
  padding: 10px 20px 10px 20px;
  text-decoration: none;
}

.btn:hover {
  text-decoration: none;
}