@charset "UTF-8";
@import url("https://use.fontawesome.com/releases/v5.0.6/css/all.css");

* {
    margin: 0px;
    padding: 0px;
}

body {
    width: 100%;
    background-image: url(https://tan-deki.com/img/bubble.png);
    background-repeat: repeat;
    background-attachment: scroll;
    letter-spacing: normal;
    text-align: center;
    font-size: 15px;
    font-family: "メイリオ", "Meiryo", sans-serif;
    line-height : 20px;
}

img {
    border: none;
    vertical-align: top;
}

a {
    text-decoration: underline;
    overflow: hidden;
}

a:link {
    color: #696969;
    text-decoration: none;
    background-color: rgba(231,220,252,0.5);
}

a:visited {
    color: #696969;
    text-decoration: none;
    background-color: rgba(232,246,231,0.5);
}

a:active {
    color: #696969;
    text-decoration: none;
}

a:hover {
    color: #FFFFFF;
    text-decoration: none;
    background-color: rgba(105,105,105,0.5);
}

p {
    padding: 10px;
    letter-spacing: normal;
}

h1 {
    font-size: 24px;
}

h2 {
    font-size: 20px;
}

h3 {
    font-size: 18px;
}

h4 {
    font-size: 16px;
    font-weight: normal;
}

strong {
    border-bottom: 1px dashed #99CCFF;
    font-weight: bold;
}

small {
    font-size: 12px;
    font-weight: normal;
}

ul {
    padding-left: 20px;
}

ol {
    padding-left: 20px;
    font-weight: bold;
}

li {
    padding-left: 20px;
    line-height : 1.2em;
}

dl {
    padding: 5px;
}

dt {
    padding-left: 20px;
	font-weight: bold;
    line-height : 1.2em;
}

dd {
    padding-left: 30px;
}

blockquote {
    padding: 40px;
    letter-spacing: normal;
    line-height : 18px;
    border: 2px dashed #FFC8FF;
}

hr {
    padding: 15px;
    display:block;
    height: 1px;
    border: 0;
    border-top: 1px dashed #FFC8FF;
}

br.clear {
    clear:both;
}

#wrapper {
    width: 80%;
    margin: 0px auto;
    text-align: center;
}

header {
    background-color: rgba(231,220,252,0.5);
    text-align: center;
}

#site-title {
    padding: 50px;
    background-image: url("https://tan-deki.com/img/uva.jpg");
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-position: center top;
}

#site-title h1 {
    color: #663366;
    font-family: "游明朝", YuMincho, "ヒラギノ明朝 ProN W3", "Hiragino Mincho ProN", "HG明朝E", serif;
    font-size: 2.5rem;
    line-height: 1.4;
    text-shadow: 2px  2px 3px RGB(222, 250, 222),
            -2px  2px 3px RGB(222, 250, 222),
             2px -2px 3px RGB(222, 250, 222),
            -2px -2px 3px RGB(222, 250, 222);
}

.no-break {
  white-space: nowrap;
}

.uva {
    padding-top: 15px;
    font-family: "メイリオ", "Meiryo", sans-serif;
    font-size: 12px;
}

#site-description {
    font-family: "メイリオ", "Meiryo", sans-serif;
    text-shadow: 3px 3px 6px #888;
    padding: 30px;
}

#main {
    background: #fff;
    text-align: center;
}

section {
    border: 2px dashed orange;
    margin: 5px;
    padding-bottom: 5px;
}

#sidebar {
	float: right;
	width: 30%;
    text-align: right;
}

.grape {
    display: inline-block;
    text-decoration: none;
    background-color: rgba(231,220,252,0.5);
    color: #FFF;
    width: 120px;
    height: 120px;
    line-height: 120px;
    border-radius: 50%;
    text-align: center;
    overflow: hidden;
    transition: .4s;
}

.grape:hover {
    background-color: rgba(105,105,105,0.5);
}

.right {
    float:right;
}

.footer {
    text-align: center;
    margin: 20px 0 0 0;
}

.copyright {
    font-size: 12px;
    padding: 0 0 20px 0;
}

.fw-gray {
    color: rgba(0,0,0,0.3);
}

#back-to-top {
    position: fixed;
    right: 20px;
    bottom: 20px;
    width: 60px;
    height: 160px;
    background-image: url('https://tan-deki.com/img/up.png'); /* アップロードした画像を使用 */
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center;
    border: none;
    cursor: pointer;
    z-index: 100;
    opacity: 0; /* 初期状態は非表示 */
    pointer-events: none;
    transition: opacity 0.3s ease;
}

#back-to-top.show {
    opacity: 1;
    pointer-events: auto;
}