body {
  margin: 0;
  padding: 100px 0 50px 0;
  font-size: 120%;
}

/* 古いIE向けハック */
* html body {
  _zoom: 1;
  overflow: scroll;
}

.center {
  text-align: center;
}

div#headerArea {
  position: fixed !important;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 80px;
  background-color: #03875f;
  color: #fff;
}

div#footerArea {
  position: fixed !important;
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 180px;
  background-color: #ffffff;
  color: #fff;
  font-size: 80%;
}

h1 {
  padding: 25px 0px 10px 5%;
  color: #00805c;
  font-weight: bold;
  font-family: Verdana, Sans-Serif;
  letter-spacing: -1px;
  padding: .25em 0 .5em .75em;
  border-left: 6px solid #00805c;
  border-bottom: 1px solid #00805c;
}

h2 {
  color: #00805c;
  font-weight: bold;
  font-family: Verdana, Sans-Serif;
  letter-spacing: -1px;
  padding: .25em 0 .5em .75em;
  border-left: 6px solid #00805c;
  border-bottom: 1px solid #00805c;
}

h3 {
  margin: 10px 0px 0px 0px;
  color: #00805c;
  font-size: 105%;
  padding: .25em 0 .5em .75em;
  border-left: 6px solid #00805c;
  border-bottom: 1px solid #00805c;
}

h4 {
  color: #aa0033;
}

h6 {
  color: #B8A80D;
  font-size: 140%;
}

.css-caption-box img:after {
  content: attr(title);
}

.css-caption-block {
  clear: both;
}

.css-caption-block > p {
  margin-top: 0px;
}

.css-caption-box {
  float: left;
  width: 50%;
  margin-top: 0;
  margin-right: 0.5em;
  text-align: center;
  font-weight: bold;
  font-size: 0.8em;
  color: #696969;
  background-color: #fffaf0;
}

.css-caption-box img {
  width: 100%;
  height: auto;
}

p.theorem {
  background-color: #FFFFCC;
}

p.resizeimage img {
  width: 100%;
}

/* 古いIE向け */
* html div#contentsArea {
  height: 100%;
  overflow: auto;
}

/* リストを2列にする */
.two-column {
  float: left;
  width: 100%;
}

.two-column li {
  float: left;
  width: 50%;
}

/* 蛍光ペン効果 */
.pen {
  background: #EEEEEE;
}

b {
  color: #0088cc;
}

/*<b>は本来「意味的な強調」ではなく視覚的な太字*/
/*意味的に強調したい場合は <strong> を使うのが望ましい*/
strong {
  color: #00bcd4;
}