@charset "utf-8";
/*@import "http://";*/


body {
	background-color: #202020;
    margin: 0px;
    padding: 0px;
}

body::-webkit-scrollbar {  /* Chrome, Safari 対応 */
    display:none;
}

.container {
    overflow-y: scroll;
    -ms-overflow-style: none;    /* IE, Edge 対応 */
    scrollbar-width: none;       /* Firefox 対応 */
}

.container::-webkit-scrollbar {  /* Chrome, Safari 対応 */
    display:none;
}

.base_block {
    display: flex;
}

.main_block {
	flex: 1;
	overflow-y: scroll;
	height: 100vh;
}

.index_block {
	flex: 0 300px;
	padding: 1px;
	height: 100vh;
	padding: 0 10px 0 0;
	overflow-y: scroll;
}

.index_block::-webkit-scrollbar {
	width: 6px;
}

.index_block::-webkit-scrollbar-thumb {
	background: rgba(255, 255, 255, 0.5);
 	border-radius: 3px;
}
.index_block::-webkit-scrollbar-track {
	background: rgba(0,0,0,1);
	border-radius: 3px;
}

.index_block ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

.index_block p {
    margin: 0;
    padding: 3px 10px;
    list-style: none;
}

.index_block p a {
    font-family: sans-serif;
    display: block;
    text-decoration: none;
    color: #a7a7a7;
    margin: 0px 0px;
    text-align: left;
    font-size: 14px;
}


.index_block p a:hover{
    background: #333; // #000;
    color:      #fff; // #2badcb;
    // text-decoration: underline;
}

.index_chapter {
    color:      #fff;
}

.content_block {
    border-radius: 10px;
    font-family: sans-serif;
//  font-size: small;
    background: #ffffff;
    margin-top: 10px;
    margin-right: 16px;
    padding: 10px 30px 90px 30px;
    overflow:auto;
    overflow-y:auto;
    display: none;
}



.break_l {
	margin-top: 2em;
}


.inner_image img {
    float: left;
    padding-right: 10px;
}

ol li {
	margin-top: 1em;
}

ul li {
	margin-top: 1em;
}

dd {
	margin-left: 0px
}

.navigator_block {
    clear: both;
    position: fixed;
    bottom: 0px;
    right: 20px;
    width: 70px;
    height: 50px;
    text-align: right;
}

.resize_image_1 img {
	width: 100%;
	max-width: 1000px;
	min-width: 400px;
}

.resize_image_2 img {
	width: 100%;
	max-width: 800px;
	min-width: 400px;
}

<!-- table -->
table {
	border-collapse: collapse;
	text-align: left;
	line-height: 1.5;
	width: 100%;
	background-color: #e0e0e0;
}
table th {
	padding: 10px;
	font-weight: bold;
	vertical-align: center;
	border: 1px solid #ccc;
}
table td {
	padding: 10px;
	vertical-align: center;
	border: 1px solid #ccc;
}


.phonetic_symbol_table {
	border-collapse: collapse;
	width: 100%;
	max-width: 1000px;
}

.phonetic_symbol_table th {
	background-color: #ccc;
}

.blank_space {
	background-color: #ccc;
}

/* 右上がりの斜線 */
.right_up_border {
  /* ▼ 斜線はSVG画像を背景として設定 */
  background-image: url('data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHN0eWxlPSJ3aWR0aDoxMDAlO2hlaWdodDoxMDAlOyI+PGxpbmUgeDE9IjAlIiB5MT0iMCUiIHgyPSIxMDAlIiB5Mj0iMTAwJSIgc3R5bGU9InN0cm9rZTogI2NjY2NjYztzdHJva2Utd2lkdGg6IDE7Ij48L2xpbmU+PC9zdmc+');
}