.tab-area{
    width: 780px;
    display: flex;
    border: 2px solid;
    border-radius: 15px;
	margin: auto;
    overflow: hidden;
    margin-bottom: 70px;
}

.tab-area label{
	width: 390px;
    font-size: 20px;
    font-weight: bold;
    text-align: center;
    padding: 30px;
}

.tab_content {
    display: none;
    clear: both;
    overflow: hidden;
}

#tab01,
#tab02{
	display:none;
}

#tab01:checked ~ .tab-area label[for="tab01"],
#tab02:checked ~ .tab-area label[for="tab02"]{
    background: #000000;
    color: #FFF;
}

#tab01:checked ~ #tab01_content,
#tab02:checked ~ #tab02_content{
    display: block;
}

.details{
	padding: 20px 15px;
	border-bottom: 2px solid #000000;
}

.tab_content .details:first-of-type {
	border-top: 2px solid #000000;
}

.details-summary{
	list-style: none;
    font-weight: bold;
    position: relative;
    padding-left: 70px;
    padding-right: 45px;
    cursor: pointer;
    min-height: 50px;
    display: flex;
    align-items: center;
}

.details-summary:before{
	position: absolute;
    content: '';
    width: 47px;
    height: 47px;
    left: 0;
    top: calc((100% - 47px) / 2);
    background-image: url(https://www.dos-osaka.co.jp/deviceshutter/faq/img/faq_q.png);
}

.details-summary:after {
    position: absolute;
    content: '';
    width: 27px;
    height: 27px;
    right: 0;
    top: calc((100% - 27px) / 2);
    background-image: url(https://www.dos-osaka.co.jp/deviceshutter/faq/img/plus.png);
    background-repeat: no-repeat;
}

.details-summary.is-active:after {
    top: calc(((100% - 27px) / 2) + 12px);
    background-image: url(https://www.dos-osaka.co.jp/deviceshutter/faq/img/minus.png);
}

.details-content {
    margin-top: 20px;
    padding-top: 22px;
    padding-left: 70px;
    padding-right: 40px;
    padding-bottom: 10px;
    position: relative;
    min-height: 50px;
}

.details-content:before {
    position: absolute;
    content: '';
    width: 47px;
    height: 47px;
    left: 0;
    top: 10px;
    background-image: url(https://www.dos-osaka.co.jp/deviceshutter/faq/img/faq_a.png);
}

.faq-button-area{
	display: flex;
    flex-direction: column;
    gap: 15px;
    margin-top: 25px;
}

.faq-button-area .button-white{
	margin-left: auto;
    height: 50px;
}

.blue-link{
	color: #5776BF;
    text-decoration: revert;
}

@media (max-width: 900px) {

.tab-area{
	flex-direction: column;
    width: 100%;
	margin-bottom: 50px;
}

.tab-area label{
	width: auto;
	font-size: 16px;
    padding: 25px;
}

.details-summary:before{
	background-size: contain;
    width: 30px;
    height: 30px;
    top: calc((100% - 30px) / 2);
}

.details-content:before{
	background-size: contain;
    width: 30px;
    height: 30px;
}

.details-summary{
	padding-top: 0;
}

.details-summary:after{
	background-size: contain;
    width: 20px;
    height: 20px;
    top: calc((100% - 20px) / 2);
}

.faq-button-area .button-white{
	width: calc(100% - 60px);
    height: auto;
    padding: 15px 35px 15px 25px;
}

}