a {
  text-decoration:none;
}
a::after {
  content: " " url("images/explanation.png");
}
a:link, a:visited {
  color:mediumblue;
}

body h1.title {
  margin-top:-30px;
  margin-bottom:30px;
  clear: both;
  color:black;
  font-family:'ＭＳ Ｐゴシック';
  font-size:30pt;
  font-weight: bold;
  vertical-align: bottom;
}
body div.h1line {
  margin-top:20px;
  background-color:skyblue;
  vertical-align: bottom;
  line-height:150%;
}

/* 目次 */
body {
  margin-left: 20px;
/*  padding-left:20px;
  min-width:200px;
  max-width:800px;
  width:800px;*/
  background-color:cornsilk;
  line-height: 120%;
/*  letter-spacing:1px;*/
  color:black;
  font-family:'ＭＳ Ｐゴシック';
  font-size:9pt;
}
body H1 {
  color:black;
  font-family:'ＭＳ Ｐゴシック';
  font-size:14pt;
  font-weight: bold;
/*  line-height: 100%;
  border-bottom: thick double black; */
}
body H2 {
  margin-left: 0px;
  text-indent: 0em;
  color:blue;
  font-family:'ＭＳ Ｐゴシック';
  font-weight: bold;
  font-size:12pt;
  line-height: 100%;
  cursor:pointer;
}

body p {
  margin-top: 0px;
  margin-bottom: 0px;
  background-repeat: no-repeat;
  font-size:9pt;
}
body p.c {
  margin-left: 1em;
  display: block;
  cursor:pointer;
  background-image: url(../images/none.png);
}
body p.s {
  margin-left: 2em;
  display: block;
  font-size:9pt;
  line-height:120%;
}
section#c3 p.s {
  color:mediumblue;
  font-weight:bold;
  font-size:larger;
}
body p.ss {
  margin-left: 3em;
  display: block;
}
body p.description {
  margin-top: -1em;
  margin-left: 1em;
  color: blue;
}
body .arrow{
  position: relative;
  display: inline-block;
  padding: 0 0 0 16px;
  color: #000;
  vertical-align: middle;
  text-decoration: none;
  font-size: 15px;
}
body a:hover {
  background-color:lightgreen;
}

section.h1 {
  position:relative;
  height:100%;
  min-height: 100vh;
}
footer {
  position:absolute;
  bottom:50px;
  right:0px;
  margin-top:2em;
  background-color:#EFF;
  width:600px;
  height:50px;
  border:solid 10px #DDD;
  border-radius:30px/10px;
}