/* 20210219 created by rk. */

/*
@media (max-width: 767px)
	.p-question_inner {
   		height: -webkit-fill-available;
	}
}
*/

.dispTable {
	display: block;
	position: relative;
	margin-right: auto;
	margin-left: auto;
	max-width: 450px;
	margin-top: 25px;
	margin-bottom: 25px;
}

.videoTable {
	display: block;
	position: relative;
	max-width: 100%;
	margin-right: auto;
	margin-left: auto;
	margin-top: 25px;
	text-align: right;	
}

.videoBlock {
	position: relative;
}

.videoBlock .playBtn {
	display: block;
	position: absolute;
	top: 50%;
	left: 50%;
    max-width: 100px;
    max-height: 100px;
    width: 10vw;
    height: 10vw;
	background: url(../img/icon_play.svg) no-repeat center;
	background-size: 100% auto;
	transform: translate(-50%,-50%);
	cursor: pointer;
}

_::-webkit-full-page-media, _:future, :root .playBtn {
	display: none;
}

@-moz-document url-prefix() {
.videoBlock .playBtn {
	display: none;
}
}

.videoBlock {
	cursor: pointer;
}

@media (max-width: 767px) {
.videoBlock .playBtn {
	display: none;
}
}

.videoLead {
	margin-top: 30px;
	text-align: left;
	font-size: 18px;
	line-height: 1.8;
}

@media (max-width: 767px) {
	.videoLead {
		margin-top: 15px;
		font-size: 16px;
	}
}

.paperList {
	margin-top: 30px;
	text-align: center;
	font-size: 18px;
	line-height: 1.8;
}

@media (max-width: 767px) {
	.paperList {
		margin-top: 15px;
		font-size: 16px;
	}
}

.muted_btn {
    display: inline-flex;
	flex-wrap: wrap;
    align-items: center;
    justify-content: center;
	/* position: absolute;
	top: 10px;
    right: 5px; */
	width: 35px;
    height: 35px;
	margin-top: 15px;
	cursor: pointer;
	transition: all 0.25s ease-in-out;
	text-align: center;
}
.muted_btn:hover {
	opacity: 0.7;
}
.muted_btn::before {
	display: block;
    width: 35px;
    height: 35px;
	background-image: url(../img/icon_mute-off.svg);
	background-repeat: no-repeat;
	background-position: center center;
	background-size: 100% auto;
	content: '';
}
.muted_btn.active::before {
	background-image: url(../img/icon_mute-on.svg);
}
.muted_btn::after {
	display: block;
	font-weight: bold;
	font-size: 12px;
	content: 'ON';
}
.muted_btn.active::after {
	content: 'OFF';
}
@media (max-width: 767px) {
	.muted_btn {
		height: auto;
	}
	.muted_btn:hover {
		opacity: 1;
	}
}


.p-top {
	height: auto !important;
}

.p-top::before {
	background: none;
}

.p-retry {
	margin-top: 50px;
}

.bg-black {
	background: #4B4B4B !important;
}


.p-top_textbook {
	width: 100%;
	margin-top: 60px;
	text-align: center;
}

.p-top_textbook .c-decoration_line {
	margin: 0 auto;
}

.p-top_textbook .c-decoration_line::after {
	content: none;
}

.p-top_textbook .p-top_bubble {
	top: -60px;
	width: 350px;
    font-size: 16px;
	line-height: 1.5;
}

.p-top_textbook .p-top_bubble:before,
.p-top_textbook .p-top_bubble:after {
	top: auto;
	bottom: 15px;
}

.p-top_textbook .p-top_button a {
    padding: 15px;
    font-weight: normal;
    font-size: 20px;
}

.p-top_textbooTttl {
	margin-bottom: 30px;
	font-size: 24px;
}

.p-top_textbooTttl a {
	color: #4B4B4B;
	text-decoration: none;
}


.p-top_textbooLead {
	margin-top: 20px;
	font-size: 18px;
	line-height: 1.5;
}

@media (max-width: 767px) {
	.p-top_textbook {
		margin-top: 60px;
	}
	.p-top_textbook .p-top_bubble {
		top: -50px;
		width: 300px;
		font-size: 14px;
	}
}