@charset "utf-8";
/* CSS Document */
.artec_logo {
	margin-bottom: 10px;
	margin-top: 15px;
}

.jumbotron {
	background:url("../images/main_title.png") center no-repeat; background-size: cover;
	/*position: relative;*/
	height: 200px;
	margin-bottom: 0px !important;
}

ul {
	padding-left: 0px;
}

/*ナビ背景*/
.naviback {
	background-color: #000000;
	width: 100%;
}
/*ナビ基本*/
li.pill a {
	background-color: #000000;
	color: #ffffff;
	border-radius: 0px;
	font-size: 18px;
	padding-top: 12px;
	padding-bottom: 8px;
}
/*ナビアクティブ時*/
.nav-pills .nav-link.active, .nav-pills .show > .nav-link {
	color: yellow;
	background-color: #000000;
	border-radius: 0px;
}
/*ナビホバー時*/
.pill a:hover, .pill a:focus {
	color: yellow;
	background-color: #000000 !important;
}
/*ここまで*/


.category_title {
	color: #0066cc;
	font-size: 30px;
	margin-top: 60px;
}
.tangen_title {
	color: white;
	background-color:black;
	font-size: 22px;
	margin-top: 15px;
	margin-bottom: 30px;
	padding-top: 5px;
	padding-bottom: 4px;
}


.tangen_name {
	font-size: 20px;
	margin-top: -15px;
}

.tangen_btn{
	color: #0066cc;
	font-size: 19px;
	margin-top: 5px;
	margin-bottom: 45px;
}

.tangen_btn, a:hover{
	color: black;
}

.description {
	font-size: 18px;
	margin-bottom: 45px;
	margin-top: 5px;
}

.worksheet_title {
	font-size: 19px;
	margin-bottom: 6px;
	color: black;
	/*border: 1px solid #ccc;*/
}

.cover {
	display: inline-block;
}

.lump {
	margin-bottom: 60px;
}

.return_btn {
	font-size: 24px;
	margin-top: 60px;
	margin-bottom: 10px;
}

footer {
	background-color: black;
	padding-top: 30px;
	padding-bottom: 15px;
	color: white;
	margin-top: 5px;
}
.companyname {
	font-size: 16px;
}
.copyright {
	font-size: 14px;
}

.link-button a {
	display: block;
	text-decoration: none;
	color: #ffffff;
	font-size: 16px;
	line-height: 3em;
	border-radius: 2px;
	width: auto;
	margin-top: 0.2em;
	margin-left: auto;
	margin-right: auto;
	background-color: #003399;
}

.link-button a:hover {
	text-decoration: none;
	color: #ffffff !important;
	opacity: 0.5;
	-moz-opacity: 0.5;
	filter: alpha(opacity = 50);
}


/* ページトップへ戻るボタン */
#page-top{
	position:fixed;
	display:none;
	width:100%;
	height: 0;
	bottom: 180px;
	z-index:2;
	margin: auto;
}

#page-top a{
	position:absolute;
	display:block;
	right: 40px;
	width:60px;
	height:60px;
	background-size: 60px 60px;
	-moz-background-size: 60px 60px;
	background-image:url('../images/top_btn.png');
	background-repeat: no-repeat;
	/*bottom:-180px;*/
}
#page-top a:hover{
	opacity:0.5;
}

@media only screen and (max-width: 480px)　{
	#page-top {
	display:none !important;
	}
}


/*セクション背景ボーダー*/
section {
background-image: repeating-linear-gradient(45deg, rgba(0,0,0,0.07), rgba(0,0,0,0.07) 1px, transparent 1px, transparent 4px);
background-size: 6px 6px;
}