body {
    font-family: Arial;
    color: #333;
    margin: 2em auto;
    max-width: 800px;
    padding: 1em;
    line-height: 1.4;
    hyphens: auto;
}

* {
  box-sizing: border-box;
}

h1, h2, h3 {
  color: #136e90ff;
}

table {
  font-family: monospace;
  border-spacing: 0px;
  border-collapse: collapse;
  width: 100%;
  max-width: 100%;
  margin-bottom: 15px;
  background-color: transparent;
  text-align: left;
}

th {
  font-weight: bold;
  border: 1px solid #ccc;
  padding: 8px;
}

td {
  border: 1px solid #ccc;
  padding: 8px;
}


footer {
  color: #a1a7b1;
  font-size: 10px;
  font-weight: bold;
  font-family: monospace;
}

sub {
  color: gray;
  font-style: italic;
}

img {
  max-width: 100%;
  height: auto;
}

hr {
  display: block;
  height: 1px;
  border: 0;
  border-top: 1px solid #ccc;
  margin: 1em 0;
  padding: 0;
}

fieldset {
  border: 1px solid #caeaff;
  border-radius: 6px;
  background-color: #e1f3ff;
}

#dozenal-examples {
  padding-left: 0;
}
#dozenal-examples > li {
  padding: 12px;
  margin-bottom: 6px;
  border-radius: 8px;
  background-color: #caeaff;
  list-style: none;
}
#dozenal-examples > li:nth-child(odd) {
  background-color: #e1f3ff;
}
.answer-correct{
    color: green;
}
.answer-wrong{
    color: red;
}
#history > * {
    display: block;
}

#dozenalTable {
  font-size: 12px;
  border: 0px;
}

#dozenalTable > tr > td {
  border: none;
}

#dozenalTable > tr:nth-child(odd) > td:nth-child(odd) {
  background-color: #caeaff;
}

#dozenalTable > tr:nth-child(odd) > td:nth-child(even) {
  background-color: #e1f3ff;
}

#dozenalTable > tr:nth-child(even) > td:nth-child(odd) {
  background-color: #fbcaff;
}

#dozenalTable > tr:nth-child(even) > td:nth-child(even) {
  background-color: #fbe1ff;
}