html {

  font-size: 100%;
}


body {
  margin: auto;
  padding: 10px;
  max-width: 960px;
  background-color: #f5f5f5;
  font-family: Helvetica, Verdana, sans-serif;

}

h1 {
  font-size: 1.6em;
  text-align: center;
  margin-bottom: 35px;
  line-height: 1.8em;
}

h2 {
  font-size: 1.4em;
  line-height: 1.6em;
}

select {
  font-size: 1em;
}


.small {
font-size: 0.9em;
line-height: 1.1em;
}

label {

  line-height: 1.8em;
}


.checkbox, .radiobutton {
  width: 18px;
  height: 18px;
}