/* <system section="theme" selected="xxxxxxxxxxxxxxx"> */
@import url("https://codomisu.sakura.ne.jp/minimalism/old.css");
/* </system> */
h1 {
  position: relative;
  padding: 0.6em;
  background: #e0edff;
}

h3:after {
  position: absolute;
  content: '';
  top: 100%;
  left: 30px;
  border: 15px solid transparent;
  border-top: 15px solid #364e96;
  width: 0;
  height: 0;
}
h3 {
  color: #364e96;/*文字色*/
  border: solid 3px #364e96;/*線色*/
  padding: 0.5em;/*文字周りの余白*/
  border-radius: 0.5em;/*角丸*/
}

h4 {
  position: relative;
  padding: 0.25em 0;
}
h4:after {
  content: "";
  display: block;
  height: 4px;
  background: -webkit-linear-gradient(to right, rgb(54, 78, 150), transparent);
  background: linear-gradient(to right, rgb(54, 78, 150), transparent);
}

/*目次に戻るボタン*/
.hi-mkj {
display: inline-block;
position: fixed;
bottom: 20px;
right:13px;
height: 60px;
width: 60px;
line-height:60px;
text-align: center;
opacity: 0.7;
border-radius: 50%;
z-index: 5;
text-decoration: none!important;
background: #fff!important;
border: 1px solid #668ad8;
color: #668ad8!important;
}
.hi-mkj:after {
content: "目次へ";
position: absolute;
top: 15px;
left: 14px;
font-size: 10px;
}
.hi-mkj:before {
font-family: fontawesome;
content: "\f0ca";
position: absolute;
top: -2px;
left: 17px;
font-size: 26px;
}