.actab {
	position: relative;
	overflow: hidden;
	width: 100%;
    margin: 0 auto;
}
.actab input {
	position: absolute;
	z-index: -1;
	opacity: 0;
}
.actab label {
	font-weight: bold;
	line-height: 3;
	position: relative;
	display: block;
	padding: 0 0 0 1em;
	cursor: pointer;
    margin: 0 0 1px 0;
    color: #339966;
    border-bottom: solid 2px #339966;
	background: #ffffff;
}
.actab .actab-content {
	overflow: hidden;
	max-height: 0;
	-webkit-transition: max-height 0.35s;
	transition: max-height 0.35s;
	color: #333333;
	background: #f8f8f8;
}
.actab .actab-content p {
	margin: 1em;
}
/* :checked */
.actab input:checked ~ .actab-content {
	max-height: 20em;
}
/* Icon */
.actab label::after {
	line-height: 3;
	position: absolute;
	top: 0;
	right: 0;
	display: block;
	width: 3em;
	height: 3em;
	-webkit-transition: all 0.35s;
	transition: all 0.35s;
    text-align: center;
    color: #339966;
}
.actab input[type=checkbox] + label::after {
	content: '+';
}
.actab input[type=checkbox]:checked + label::after {
	transform: rotate(315deg);
}

/*ブログ装飾用CSS*/

.box2 {
    padding: 0.5em 1em;
    margin: 2em 0;
    font-weight: bold;
    color: #6091d3;
    background: #FFF;
    border: solid 3px #6091d3;
    border-radius: 10px;
}
.box2 p {
    margin: 0; 
    padding: 0;
}

.box3 {
    padding: 0.5em 1em;
    margin: 2em 0;
    color: #232323;
    background: #fff8e8;
    border-left: solid 10px #ffc06e;
}
.box3 p {
    margin: 0; 
    padding: 0;
}

.box4 {
    position: relative;
    margin: 2em 0;
    padding: 3em 1em 0.5em 1em;
    border: solid 3px #95ccff;
    border-radius: 8px;
}
.box4 .box-title {
    position: absolute;
    display: inline-block;
    top: -13px;
    left: 10px;
    padding: 0 9px;
    line-height: 1;
    font-size: 19px;
    background: #FFF;
    color: #95ccff;
    font-weight: bold;
}
.box4 p {
    margin: 0; 
    padding: 0;
}

.under{
	background: linear-gradient(transparent 70%, yellow 70%);
}

.text-bold{
	font-weight:bold;
}

.text-red{
	font-weight:bold;
	color:red;
}

/*目次中央寄せ*/
#toc_container {
        margin: auto;
}