.wp-article {
    max-width: 800px;
    margin: 0 auto;
  }

  .wp-thumbnail {
    width: 100%;
    margin-bottom: 48px;
    border: 1px solid #eee;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
  }
  .wp-thumbnail img {
    width: 100%;
    height: auto;
    display: block;
  }

  .wp-content {
    line-height: 2;
    color: #333;
  }

  .wp-content h2 {
    font-size: 1.5rem;
    font-weight: bold;
    margin-top: 56px;
    margin-bottom: 24px;
    color: #222;
  }

  .wp-content p {
    margin-bottom: 16px;
  }

  .wp-content ul {
    margin-bottom: 16px;
    padding-left: 24px;
  }


  .wp-content hr {
    border: 0;
    border-top: 1px solid #ddd;
    margin-bottom: 16px;
  }

  .red {
      color: #e60012;
      font-weight: bold;
  }

  .blue {
      color: #0068b7;
      font-weight: bold;
  }

  .keiko_yellow {
      background: linear-gradient(transparent 60%, #fff100 60%);
      font-weight: bold;
  }

  .big {
      font-size: 1.25rem;
      font-weight: bold;
  }