h1 {
  border: solid blue 1.3px;
  text-align:center;
  font-size: 1.7em;
  font-weight: bold;
  padding: 3px;
  background-color:#ccffcc;
}

h2 {
  border: solid blue 1px;
  text-align:center;
  font-size: 1.5em;
  font-weight: bold;
  padding: 3px;
  background-color:#bbffbb;
}

pre {
  overflow: auto;
  max-height: 400px;
  margin: 10px 10px;
  padding: 12px;
  border: 5px groove green;
  font-family: sans-serif;
  background-color: #fdfaf4
}

code {
  font-family: sans-serif;
  font-style: italic;
  padding: 2px;
  background-color: #E0E0E0;
}

.theorem {
  font-family: sans-serif;
  padding: 12px;
  border: 5px groove green;
  font-family: sans-serif;
  background-color: #fdfaf4
}

.title {
  font-weight: bold; 
}

.equation{
  text-align:center;
}

ul {
  list-style-image:url("pochi.png");
}

li {
  margin-bottom: 12px;
}

td {
  padding: 5px;
}

.tdleft {
    width:22%;
    vertical-align:top;
    padding-top: 20px;
    min-width:90px;
    table-layout: fixed;
}

.tdright {
    width:20%;
    vertical-align:top;
    padding-top: 20px;
    min-width:90px;
    table-layout: fixed;
}

@media screen and (max-width: 799px){
  .widescreen { display:none;}
}

@media screen and (min-width: 800px){
  .widescreen { font-size: small;}
}

@media screen and (min-width: 700px){
  .sp { display:none;}
}

@media screen and (max-width: 699px){
  .sp { 
     color: red;
     font-weight: bold;
     font-size: large;
  }
}

@media screen and (min-width: 700px){
  .btnpc { 
     width:350px;
     font-size:24px;
     font-weight:bold;
     text-decoration:none;
     display:block;
     text-align:center;
     padding:13px 0 16px;
     color:black;
     background-color:#49a9d4;
     border-radius:10px;
     box-shadow:2px 2px #555;

     background-image:-moz-linear-gradient(
     top,
     #ffd855 0%,
     #ffa310);
 
     background-image:-webkit-gradient(
     linear,left top,left bottom,
     from(#ffd855),
     to(#ffa310));
  }
}

@media screen and (max-width: 699px){
  .btnsp { 
     font-weight:bold;
     font-size:large;
     text-decoration:none;
     display:block;
     text-align:center;
     padding:9px 0 11px;
     color:black;
     background-color:#49a9d4;
     border-radius:5px;
     box-shadow:2px 2px #555;

     background-image:-moz-linear-gradient(
     top,
     #ffd855 0%,
     #ffa310);
 
     background-image:-webkit-gradient(
     linear,left top,left bottom,
     from(#ffd855),
     to(#ffa310));
     }
}

@media screen and (min-width: 700px){
  .short { display:none;}
}

@media screen and (max-width: 699px){
  .long { display:none;}
}

strong {
  font-weight: bold;
  font-size: large;
  padding: 7px;
  background-color: #ddffdd; 
}

.readmore-area {
   display: none;   /* デフォルトでは非表示にしておく */
}

.snsb {
	overflow: hidden;
	list-style-image: none;
	list-style-type: none;
}
.snsb li {
	float: left;
	margin-right: 4px;
}
.snsb iframe {
	margin: 0 !important;
}