@charset "UTF-8";
body {line-height: 2em;}
#wrapper {
    position: relative;
    width: 100%;
}
#wrapper:before {
    content: "";
    display: block;
    padding-top: 50%; /* 高さを幅の50%に固定 */
}
#kb-header {
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background-image: url(../img/top.jpg);
    background-size: cover;
    background-position: center center;
}
#kb-header .container-fluid h1 {
    background-color: hsla(211,100%,22%,0.69);
    padding: 0.2em;
    color: #FFFFFF;
    font-size: 40px;
    line-height: 1.3em;
    text-align: center;
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    margin: 0;
}

h1 .logo {
    display: block;
    padding: 0;
    margin-bottom: 10px;
    height: 40px;
}
h1 .logo img { height: 40px; vertical-align: top}
#footer {
    padding: 10px 0px;
    background-color: hsla(0,0%,100%,0.70);
}
#footer h6 {
    margin: 0px;
    line-height: 1;
}

/*各ページヘッダ画像*/
#kb-header.forstudents {
    background-image: url(../img/top-bnr-001.jpg);
    background-position: top right;
}

/*トップページ*/
.panel.panel-default .panel-heading.clearfix img { width: 100%; }

/*目次ページ*/
.list-group-item-heading .glyphicon.glyphicon-chevron-right { margin-right: 1em; }

/*コンテンツページ*/
#contents h2 {
    color: #006DA1;
    border-top: 2px solid #006DA1;
    border-bottom: 2px solid #006DA1;
    padding: 0.25em 0;
    font-weight: bold;
    margin-bottom: 0.75em;
}
#contents h3 {
    border-bottom: 2px solid #006DA1;
    padding-bottom: 0.25em;
    padding-top: 1em;
}
.back_btn { margin: 5rem 0; }

@media (max-width:767px){

.br::before {
	content: "\A" ;
	white-space: pre ;
}

}

@media (max-width:768px){

#kb-header .container-fluid h1 {
    width: 100vw;
    margin: 0px;
    padding: 0.2em 1em;
    }

.panel.panel-default { margin: 30px -15px; }
.container { margin: 15px; }

}

@media (max-width:767px) and (orientation:portrait){
#wrapper:before {
    content: "";
    display: block;
    padding-top: 100%; /* 高さを幅の100%に固定 */
}
#kb-header {
    background-image: url(../img/top_sm.jpg);
}
#kb-header.forstudents {
    background-image: url(../img/top-bnr-001_sm.jpg);
}
}