table, th, td {
            border: 1px solid black;
            border-collapse: collapse;
            padding: 8px;
        }
body { font-size: 18px;}

#source, #target, #sourceText, #situation
{ font-size: 18px;
  width: 400px;
  height: 40px;
  padding: 10px;
}

button { height: 40px; font-size: 30px;}

.arrow {
  border: solid black;
  border-width: 0 3px 3px 0;
  display: inline-block;
  padding: 3px;
}

.right {
  transform: rotate(-45deg);
  -webkit-transform: rotate(-45deg); /* For older browsers */
}