[ADD]全画面共通cssファイルを作成しました

src/main/resources/static/css/style.css

@@ -0,0 +1,214 @@
+/* =======================
+   全体
+======================= */
+body {
+    padding-top: 80px;
+    padding-bottom: 80px;
+    background-color: #f8f9fa;
+}
+
+/* =======================
+   コンテンツ
+======================= */
+.main-container {
+    max-width: 480px;
+    margin: 0 auto;
+    padding: 0 12px;
+}
+
+/* =======================
+   タイトル
+======================= */
+.page-title {
+    text-align: center;
+    font-weight: bold;
+    margin-bottom: 20px;
+}
+
+/* =======================
+   ヘッダー
+======================= */
+.app-header {
+    background-color: #E3F2FD;
+    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
+}
+
+.app-logo {
+    font-size: 1.2rem;
+    font-weight: bold;
+}
+
+/* =======================
+   フッター
+======================= */
+.app-footer {
+    background-color: #E3F2FD;
+    border-top: 1px solid #d0d7de;
+}
+
+/* =======================
+   カード
+======================= */
+.app-card {
+    background-color: #ffffff;
+    border-radius: 12px;
+    padding: 15px;
+    margin-bottom: 15px;
+    box-shadow: 0 2px 5px rgba(0,0,0,0.08);
+}
+
+.card {
+    border-radius: 12px;
+    margin-bottom: 12px;
+}
+
+.card-body {
+    padding: 12px;
+}
+
+/* =======================
+   カレンダー
+======================= */
+
+#calendar {
+    width: 100%;
+    border-collapse: collapse;
+    table-layout: fixed;
+}
+
+#calendar th,
+#calendar td {
+    border: 1px solid black;
+}
+
+th {
+    font-weight: bold;
+    height: 35px;
+    font-size: 13px;
+    text-align: center;
+}
+
+td {
+    width: 14%;
+    height: 70px;
+    padding: 5px;
+    text-align: left;
+    vertical-align: top;
+}
+
+td:hover {
+    background-color: lightblue;
+}
+
+.holiday {
+    color: red;
+}
+
+#today {
+    font-weight: bold;
+    background-color: bisque;
+}
+
+.calendar-title {
+    display: grid;
+    grid-template-columns: 1fr auto 1fr;
+    align-items: center;
+    text-align: center;
+}
+
+.calendar-date {
+    display: flex;
+    align-items: baseline;
+    gap: 10px;
+}
+
+.year {
+    font-size: 20px;
+}
+
+.month {
+    font-size: 30px;
+    font-weight: bold;
+}
+
+.month-button {
+    display: flex;
+    justify-content: center;
+    align-items: center;
+
+    width: 40px;
+    height: 40px;
+
+    font-size: 28px;
+    text-decoration: none;
+    color: #333;
+
+    border-radius: 50%;
+}
+
+.month-button:hover {
+    background-color: #eee;
+}
+
+.month-button:last-child {
+    justify-self: end;
+}
+
+.date {
+    font-size: 13px;
+    font-weight: bold;
+}
+
+.income {
+    color: blue;
+    font-size: 10px;
+}
+
+.expense {
+    color: red;
+    font-size: 10px;
+}
+
+.total {
+    margin: 15px 10px;
+    padding: 10px;
+    border-top: 1px solid #ddd;
+
+    font-size: 16px;
+    text-align: right;
+}
+
+/* =======================
+   金額表示
+======================= */
+.plus {
+    color: #dc3545;
+    font-weight: bold;
+}
+
+.minus {
+    color: #0d6efd;
+    font-weight: bold;
+}
+
+/* =======================
+   テーブル
+======================= */
+.table {
+    background-color: white;
+}
+
+.table th {
+    vertical-align: middle;
+}
+
+.table td {
+    vertical-align: middle;
+}
+
+/* =======================
+   ボタン
+======================= */
+.btn {
+    border-radius: 10px;
+}