body {
    font-family: Arial, sans-serif;
    background-color: #f0f4f8;
    margin: 0;
    padding: 15px;
    text-align: center;
    align-items: center;
}

/* ページタイトル */
#title {
    font-size: 1.5em;
    font-weight: bold;
    margin-bottom: 20px;
    color: #333;
}

/* サブタイトル */
#subtitle {
    font-size: 1.0em;
    font-weight: bold;
    color: #2c3e50;
    margin-bottom: 10px;
    display: block;
}

#header_buttons{
    background-color:inherit;
    border: none;
    padding: 0;
    text-align: right;
}
#header_buttons a{
    display: inline-block;
}

/* コンテナのスタイル */
.container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}
.container a{
    margin: 5%;
}
.container2 {
    max-width: 250px;
    width: 80%;
    display: flex;
    align-items: center;
    gap: 12px;
    justify-content: center;
    margin: 0 auto;
}

#detail_select_input {
    gap: 6px;
    font-size: 0.95em;
    text-align: left;
    border-radius: 4px;
}

/* 中央寄せ & 背景の枠をつける */
div {
    background-color: white;
    border: 1px solid #ccc;
    padding: 10px;
    border-radius: 8px;
}
p {
    margin-block-start: 0;
    margin-block-end: 0;
    display: inline-flex;
    align-items: center;
}

/* メディアクエリ */
@media (min-width:800px) and (max-width:1500px) {
    .container {
        grid-template-columns: 1fr 1fr;
    }
}
@media (min-width:1500px){
    .container {
        grid-template-columns: 1fr 1fr 1fr;
    }
}

/* リンクスタイル */
a {
    display: block;
    padding: 5px;
    color: black;
    text-decoration: none;
    border-radius: 5px;
    transition: background-color 0.3s;
}

a:hover {
    background-color: lightgray;
}

footer{
    position: absolute;
    max-width: 500px;
}

input[type="text"], input[type="number"]{
  text-align: center;
  position: relative;
  bottom: 1px;
  margin: 0;
  padding: 0;
  border: 1px solid #757575;
  border-radius: 2px;
  appearance: none;
}