body {
  font-family: '游明朝', 'Meiryo', sans-serif; 
  line-height: 1.6;
  padding: 2em;
  max-width: 800px;
  margin: auto;
  background-color: #fff8f0;
}

.notice-card {
  background: #ffffff;
  padding: 2em;
  border-radius: 8px;
  box-shadow: 0 0 8px rgba(0,0,0,0.1);
  border-left: 6px solid #e67e22; /* オレンジ系カラー */
}

.notice-card h1 {
  font-size: 1.8em;
  margin-bottom: 0.5em;
  color: #e67e22;
}

.notice-card h2 {
  font-size: 1.2em;
  margin-top: 0.5em;
  color: #e67e22;
}

.notice-card .date {
  color: #888;
  font-size: 0.9em;
  margin-bottom: 1.5em;
}

.notice-card .content p {
  margin-bottom: 1em;
}

.close-button {
  text-align: center;
  margin-top: 2em;
}

.close-button button {
  background-color: #e67e22;
  color: #fff;
  border: none;
  padding: 0.6em 1.2em;
  font-size: 1rem;
  border-radius: 4px;
  cursor: pointer;
}

.close-button button:hover {
  background-color: #cf711f;
}

img {
  max-width: 100%;   /* 親要素の幅を超えない */
  height: auto;
  display: block;    /* 余計な隙間をなくす */
}