style.css

body {
  margin:0;
  padding: 0;
  background: -webkit-gradient(linear, left top, right bottom, from(#141E30), to(#243B55)) fixed;
  overflow: hidden;
}

h1 {
  font-family: Helvetica, arial, sans-serif;
  text-align:center;
  color: rgb(255, 183, 134);
}

#field {
  padding: 20px;
  margin: auto;
  display: block;
  width: 50%;
  height: 30%;
}


#plot {
  padding: 0;
  margin: auto;
  display: block;
  width: 80%;
  height: 30%;
  background: rgba(13, 40, 97, 0);
}

#chart-container {
  width: 600px;
  height: 300px;
  margin: auto;
}

button{
  display: inline-block;
  margin: 1em;
  border-radius: 3px;
  background: #434d5a;
  border: none;
  padding: 1em 0;
  color: white;
  text-align: center;
  text-decoration: none;
  width:12em;
  font-family: 'Courier New', Courier, monospace;
}