body {
  font-size: 1em;
  font-family: 'arial', san-serif;
  background: #C6E2FF;
}

input {
  font-size: 1.3em;
  margin-bottom: 0.5em;
  border: 1px solid #000;
}

h1 {
  text-align: centre;  
  margin-bottom: 2em;
  margin-left: 1em;
}

.option {
  background: #fff;
}

.result {
  background: #D3D3D;
}

#button {
  background: #caff70;
}

#length-convert {
  margin-left: 2em;
  padding-bottom: 3em;  
}

#litre-convert {
  margin-left: 2em;
  padding-bottom: 3em;
}

#temp-convert {
  margin-left: 2em;
  padding-bottom: 3em;
}

div {
  padding: 5px;
}