body {
    margin:1em;
}

.text-centered {
    text-align:center;
}

.simple-margin {
    margin-top: 1em;
    margin-bottom: 1em;
}

.register-input-width-cm {
    width: 2em;
}

.register-input-width-sm {
    width: 5.5em;
}

.column {
  margin-left: 550px;
}

#editor { 
  position:fixed;
  top:0;
  left:0;
  width: 500px;
  height: 100%;
  border-right:1px solid #AAAAAA;
}

.hide-length {
    display:none;
}
.show-length {
    display: inline;
}