/* CSS files add styling rules to your content */

body {
  font: 1.1rem "Verdana", helvetica, arial, sans-serif;
  margin: 1rem;
}

h1 {
  font-size: 1.75rem;
  color: #373fff;
}

canvas {
  background-color: black;
  border: 2px solid black;
  width: 640px;
  height: 340px;
  margin-bottom: 1em;
}

kbd {
  border-radius: 4px 2px;
  border: 1px solid #000;
  border-radius: 4px;
  padding: 0 1px 0 1px;
  background-color: #eee;
}

.matrix-box {
  border: 1px solid #999;
  box-shadow: 2px 4px 4px #bbb;
  width: 320px;
  height: 11em;
  font: 1em Verdana, Helvetica, "Open Sans", sans-serif;
  display: inline-block;
}

.matrix-box h2 {
  font-size: 1.1rem;
  font-weight: bold;
  text-decoration: underline;
  text-decoration-skip-ink: auto;
  text-align: center;
}

.matrix-box div {
  font-size: 1rem;
}

.button-box {
  background-color: #ddd;
  color: #000;
  width: 660px;
  border-radius: 0.5em 0.5em;
  padding-left: 1em;
  padding-top: 0.5em;
  margin-bottom: 1em;
  margin-top: 1.2em;
}

.button-row {
  margin-bottom: 0.7em;
}

.button-row button {
  margin-bottom: 1em;
}

.click-here {
  font-size: 1rem;
  font-weight: bold;
}

math {
  font: 1.1rem Verdana, Helvetica, "Open Sans", sans-serif;
}