body {
    font-family: sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #e0f2f7; /* 薄い水色 */
    margin: 0;
    padding: 0;
  }
  
  .section {
    width: 80%;
    max-width: 800px;
    margin: 20px auto;
    padding: 20px;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  }
  
  h1 {
    color: #03a9f4; /* 鮮やかな水色 */
    text-align: center;
    margin-bottom: 20px;
  }
  
  p {
    margin-bottom: 15px;
  }
  
  img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 20px auto;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  }
  
  a {
    color: #03a9f4;
    text-decoration: none;
  }
  
  a:hover {
    text-decoration: underline;
  }
  
  small {
    font-size: 0.8em;
    color: #777;
  }
  
  big {
    font-size: 1.2em;
    font-weight: bold;
    color: #03a9f4;
  }