*,
*:before,
*:after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-size: 100%;
  word-break: keep-all;
}

.thumbnail {
	display: none;
}

img .thumbnail {
	display: none;
}


body {
	width: 100%;
	background-color: black;
	color: white;
}

h1 {
	background-color: white;
	color: black;
	text-align: center;
	max-width: 600px;
	margin: 0 auto;
	padding: 1.8em 0 0.2em 0;
	font-size: 2.5em;
	cursor: pointer;
}

h2 {
	background-color: white;
	color: black;
	text-align: center;
	max-width: 600px;
	margin: 0 auto;
	border-bottom: solid 1px black;
	padding: 0.5em;
	cursor: pointer;
}

h3 {
	color: white;
	background-color: white;
	padding: 1em;
	border-bottom: solid 1px black;	
	max-width: 600px;
	margin: 0 auto;
	cursor: default;
}

h4 {
	color: black;
	background-color: white;
	padding: 0 0 1.3em 0;
	max-width: 600px;
	margin: 0 auto;
	cursor: pointer;
	font-size: 1.6em;
	text-align: center;
}

.lt1, .lt2, .lt3 {
	background-color: yellow;
}


.esc {
	background-color: limegreen;
	color: black;
	right: 1em;
	bottom: 1em;
	text-align: center;
	font-size: 0.8em;
	padding: 0.5em;
	position: fixed;
	animation: backbutton 5s infinite;
	z-index: 999;
	cursor: pointer;
}

.box {
	background-color: white;
	color: black;
	max-width: 600px;
	margin: 0 auto;
	padding: 1em 2em;
	line-height: 1.8em;
	border-bottom: 1px solid black;
	cursor: default;
}


figure {
	text-align: center;
}

figcaption {
	text-align: center;
	font-size: 0.9em;
	padding: 0 1.5em;
	color: gray;
}

img {
	max-width: 100%;
}

iframe {
	width: 100%;
	margin: 0;
}

a {
	word-break: break-all;
}

.caption {
	font-size: 0.8em;
	color: gray;
	padding: 0 1em;
}

.writer {
	font-size: 0.8em;
	color: gray;
}

.quote {
	color: dimgray;
	padding: 0 1.5em;
}

.credit {
	padding: 0 auto;
	font-size: 0.7em;
	color: black;
	background-color: white;
	text-align: center;
}

.footnote {
	font-size: 0.5em;
	text-decoration-line: none;
	color: black;
}

.footnote_cont {
	font-size: 0.8em;
	color: black;
}

@keyframes backbutton {
	0% {
		opacity: 100%;
	}

	25% {
		opacity: 50%;
	}

	50% {
		opacity: 0%;
	}

	75% {
		opacity: 50%;
	}

	100% {
		opacity: 100%;
	}

}

@media screen and (max-width: 700px) {

.esc {
	right: 1em;
}

.box {
	padding: 1em 1.5em;
}



}