ref="https://cdn.ctat.cs.cmu.edu/releases/latest/CTAT.css" rel="stylesheet" />

  <style>
    html,
    body {
      width: 100%;
      height: 100%;
      margin: 0px;
      padding: 0px;
    }

    .CTATTextInput {
      display: inline-block;
      background-color: white;
    }

    .CTATTextField {
      display: inline-block
    }

    #prompt initialnum {
      padding: 1em;
      border-style: none;
      font-family: Trebuchet MS;
      background-color: white;
    }

    .subproblem {
      paddin