@charset "UTF-8";
html, body {
  background-color: #aca181;
  margin: 0px 30px 0px 30px;
}

.container {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  width: 100%;
  text-align: center;
}

.container .col {
  width: 100%;
  white-space: nowrap;
}

.container p {
  margin: 20px 0px 20px 0px;
}

.clearBoth {
  clear: both;
}

p {
  font-size: 2.5rem;
  color: #e9e6dd;
}

h1, h2, h3, h4 {
  font-weight: normal;
}

h1 {
  text-align: center;
  font-size: 4em;
  color: #e9e6dd;
  margin: 30px 0px 40px 0px;
}

h2 {
  font-size: 3rem;
  line-height: 1.7em;
  color: #6a5682;
  margin: 20px 40px 0px 0px;
}

h2 div {
  display: inline;
  color: #dee5b3;
}

ul, ol {
  font-size: 3rem;
  line-height: 1.7em;
  color: #516455;
  margin: 0px 40px 40px 20px;
}

ol {
  color: #fdfdfc;
  list-style-type: thai;
}

ol span {
  color: #dee5b3;
}

ul.ex span {
  color: #6a5682;
}

li.ans {
  color: white;
}

li.ans::after {
  content: " ←";
  color: #6a5682;
}

li.exp {
  color: #6dff96;
}

li.exp span {
  color: #b3fdd2;
}

s {
  display: inline-block;
  color: #aca181;
  text-decoration: none;
  white-space: nowrap;
  background: -webkit-gradient(linear, left top, left bottom, from(#c0b8a0), color-stop(47%, #c0b8a0), color-stop(47%, #c0b8a0), color-stop(53%, #c0b8a0), color-stop(53%, #c0b8a0), to(#c0b8a0));
  background: -o-linear-gradient(#c0b8a0 0%, #c0b8a0 47%, #c0b8a0 47%, #c0b8a0 53%, #c0b8a0 53%, #c0b8a0 100%);
  background: linear-gradient(#c0b8a0 0%, #c0b8a0 47%, #c0b8a0 47%, #c0b8a0 53%, #c0b8a0 53%, #c0b8a0 100%);
}

u {
  border-bottom: 3px dotted #d4cfbf;
  line-height: 1.1em;
}

u > em {
  background-color: #d4cfbf;
  color: white;
}

u > em:after {
  border-color: transparent transparent #d4cfbf transparent;
  border-width: 10px;
  margin-left: -10px;
}