.youtube iframe {
  width: 640px;
  height: 340px;
}

@media screen and (max-width: 640px) {
.youtube {
  position: relative;
  width: 100%;
  padding-top: 56.25%;
}

.youtube iframe {
  position: absolute;
  top: 0;
  right: 0;
  width: 100%;
  height: 100%;
}
}



.futo_aka {
    font-weight: bold;
	font-size: 14pt; 
    color: red;
}

.futo {
    font-weight: bold;
    color: black;
}

.futo_aka_ki {
    font-weight: bold;
	font-size: 12pt; 
    color: red;
	background-color: #ffff66;
}

.futo_kuro_ki {
    font-weight: bold;
	font-size: 12pt; 
    color: black;
	background-color: #ffff66;
}

.aka_ki {
    color: red;
	background-color: #ffff66;
}

.box8 {
    padding: 0.5em 1em;
    margin: 2em 0;
    color: #232323;
    background: #fff8e8;
    border-left: solid 10px #ffc06e;
}
.box8 p {
    margin: 0; 
    padding: 0;
}



.box17{
    margin:2em 0;
    position: relative;
    padding: 0.5em 1.5em;
    border-top: solid 2px black;
    border-bottom: solid 2px black;
}
.box17:before, .box17:after{
    content: '';
    position: absolute;
    top: -10px;
    width: 2px;
    height: -webkit-calc(100% + 20px);
    height: calc(100% + 20px);
    background-color: black;
}
.box17:before {left: 10px;}
.box17:after {right: 10px;}
.box17 p {
    margin: 0; 
    padding: 0;
}


.center {
  display: flex;
	align-items: center;
	justify-content: center;
}


.instagram-media {
    position: static !important;
}

/* TOCを中央に揃える設定 */
#toc_container {
  margin-left: auto;
  margin-right: auto;
}


/* 角丸ボックス */
.box2 {
    position: relative;
    margin: 2em 0;
    padding: 0.5em 1em;
    border: solid 3px #95ccff;
    border-radius: 8px;
}
.box2 p {
    margin: 0; 
    padding: 0;
}



/*目次のスタイル */
#ez-toc-container {
  border-width: 2px !important;
  border-radius: 0;
}
#ez-toc-container ul.ez-toc-list a {
  display: block;
  border-bottom: 1px solid #eee;
  padding: 8px;
}
.ez-toc-title-container {
  display: block;
  width: 100%;
}
#ez-toc-container p.ez-toc-title {
  display: block;
  text-align: center;
  margin-bottom: 5px;
}
.ez-toc-title-toggle {
  position: absolute;
  top: 13px;
  right: 15px;
}


/*Pointボックスのスタイル */
.box27 {
    position: relative;
    margin: 2em 0;
    padding: 0.5em 1em;
    border: solid 3px #62c1ce;
}
.box27 .box-title {
    position: absolute;
    display: inline-block;
    top: -27px;
    left: -3px;
    padding: 0 9px;
    height: 25px;
    line-height: 25px;
    vertical-align: middle;
    font-size: 17px;
    background: #62c1ce;
    color: #ffffff;
    font-weight: bold;
    border-radius: 5px 5px 0 0;
}
.box27 p {
    margin: 0; 
    padding: 0;
}