/* ヘッダーメニュー */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    background-color: #8F6A3B;
}
.header > div {
    display: flex;
    align-items: center;
}
.header img {
    height: 50px;
    margin: 0;
}
.header h1 {
    text-align: left;
    color: white;
    margin: 0;
}
.nav-list {
/*
    display: flex;
*/
    list-style: none;
    text-align: right;
    margin: 0;
    padding: 0;
}
.nav-list li {
    margin-left: 20px;
}
.header-list-text {
    text-decoration: none;
    color: #FFFFFF;
}
.link-button {
    text-decoration: none;
    color: #FFFFFF;
    font-weight: bold;
    background: none;
    border: none;
    padding: 0;
    margin: 0;
    cursor: pointer;
}
.link-button:hover {
    color: #808080;
}

/* ボディー */
body {
    font-family: sans-serif;
    background-color: #FFFFFF;
    margin: 0;
    padding: 0;
}
h2 {
    margin-bottom: 10px;
}

/* パンくず */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  list-style: none;
  font-size: 20px;
  font-weight: bold;
}
.breadcrumb a {
  text-decoration: none;
}
.breadcrumb li:not(:last-of-type)::after {
  content: ">";
  margin: 0 .6em; /* 記号の左右の余白 */
  color: #777; /* 記号の色 */
}

/* タブメニュー */
.f-container {
  display: flex;
  justify-content: flex-start;
  border-bottom: 1px solid #000;
  margin-bottom: 10px;
}
.tab-menu {
    text-decoration: none;
    color: #7f7f7f;
    font-weight: bold;
    margin-left: 20px;
}
.tab-menu:hover {
    color: #000000;
}
.tab-menu-active {
    text-decoration: none;
    color: #000000;
    font-weight: bold;
    margin-left: 20px;
    border-bottom: 3px solid #000;
}

.styled-link-btn {
    display: inline-block;
    padding: 10px 20px;
    margin-left: 10px;
    margin-bottom: 10px;
    background-color: #8F6A3B;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    font-size: 16px;
    border: none;
}
.styled-link-btn:hover {
    background: #DBB865;
}

.styled-btn {
    margin-left: 1.5rem;
    padding: 10px 50px;
    background: #8F6A3B;
    min-width: 200px;
    text-align: center;
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    cursor: pointer;
}
.styled-btn:hover {
    background: #DBB865;
}

.error_message {
    color: #FF0000;
}

/* 画面幅が768px以下のときだけ適用 */
@media screen and (max-width: 768px) {
    .header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 10px;
        background-color: #8F6A3B;
    }
    .header > div {
        display: flex;
        align-items: center;
    }
    .header img {
        height: 50px;
        margin: 0;
    }
    .header h1 {
        text-align: left;
        color: white;
        margin: 0;
    }
}