body {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
}

fieldset {
   padding: 6px;
   margin: 0;
   margin-top: 10px;
}
.sample-tutorial {
    position: relative;
    height: 100%;
    overflow: hidden;
}
.sample-spreadsheets {
  width: 100%;
  height: 100%;
  overflow: hidden;
  float: left;
}
.options-container {
   float: right;
   width: 280px;
   padding: 12px;
   height: 100%;
   box-sizing: border-box;
   background: #fbfbfb;
   overflow: auto;
}
fieldset span,
fieldset input,
fieldset select {
   display: inline-block;
   text-align: left;
}
fieldset span {
   width: 50px;
}
fieldset input[type=text] {
   width: calc(100% - 58px);
}
fieldset input[type=button] {
   width: 100%;
   text-align: center;
}
fieldset select {
   width: calc(100% - 50px);
}
.field-line {
   margin-top: 4px;
}