html, body {
  margin:0;
  padding:0;
  height:100%;
  overflow:hidden;
  font-family: monospace;
  color:#00ff9c;
}

/* remove default spacing */
h1, p {
  margin:0;
  padding:0;
}

/* hide audio completely */
audio {
  display:none;
}

/* space background */
.space {
  position:fixed;
  top:0;
  left:0;
  width:100%;
  height:100%;
  background:url('https://images.unsplash.com/photo-1462331940025-496dfbfc7564?q=80&w=1600&auto=format&fit=crop') center/cover no-repeat;
  filter: brightness(0.3);
  z-index:-2;
}

.noise {
  position:fixed;
  top:0;
  left:0;
  width:100%;
  height:100%;
  background:url('https://www.transparenttextures.com/patterns/noise.png');
  opacity:0.2;
  z-index:-1;
}

.radio-ui {
  position:absolute;
  top:50%;
  left:50%;
  transform:translate(-50%, -50%);
  text-align:center;
}

.frequency {
  font-size:40px;
  margin-top:15px;
}

h1 {
  font-size:48px;
}