body {
  font-family: arial;
}

fieldset {
  margin: 0 auto;
  width: 325px;
}

fieldset {
  padding-top: 10px;
  padding-bottom: 10px;
}

input {
  width: 75px;
}

label[for="width"] {
  float: left;
  margin-right: 10px;
}

#width {
  float: left;
}

label[for="height"] {
  float: right;
  margin-right: 10px;
}

#height {
  float: right;
}

#restart {
  float: right;
  clear: both;
  margin-top: 10px;
}

.togetherjs-started {
  background-color: red;
}