body {
    background-color: #fffafc;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    font-family: "Yu Gothic", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  }
  
  .container {
    position: relative;
    text-align: center;
  }
  
  .cat {
    background: none;
    padding: 0;
    border-radius: 0;
    box-shadow: none;
    max-width: 300px; /* 最大幅300pxにする */
    height: auto; /* 高さは自動で合わせる */
  }
  
  
  
  .speech-bubble {
    position: absolute;
    top: 0;
    left: 320px;
    width: 200px;
    padding: 10px;
    background: #ffccdd;
    border-radius: 20px;
    font-size: 18px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
  }
  
  .speech-bubble::after {
    content: "";
    position: absolute;
    top: 20px;
    left: -20px;
    width: 0;
    height: 0;
    border: 10px solid transparent;
    border-right-color: #ffccdd;
  }
  
  img {
    background: none;
    border: none;
    box-shadow: none;
  }