body {
      margin: 0;
      font-family: system-ui, -apple-system, BlinkMacSystemFont;
      background: #f5f5f5;
    }

    .app {
      max-width: 430px;   /* ล็อกขนาดมือถือ */
      margin: 0 auto;
      background: #080606;
      min-height: 100vh;
      color: #ffffff;
    }

    header {
   
      text-align: center;
      font-weight: bold;
      font-size: 18px;
      border-bottom: 1px solid #eee;
    }

    .hero {
      padding: 16px;
    }

    .hero img {
      width: 100%;
      border-radius: 12px;
    }

    .content {
      padding: 0;
      font-size: 15px;
      line-height: 1.6;
    }

    .btn {
      display: block;
      width: 100%;
      padding: 14px;
      margin-top: 16px;
      background: #007bff;
      color: #ffffff;
      border: none;
      border-radius: 10px;
      font-size: 16px;
      text-align: center;
    }

    footer {
      padding: 12px;
      text-align: center;
      font-size: 13px;
      color: #000000;
      border-top: 1px solid #eee;
    }
ul li {
    list-style: none;
    padding-top: 4px;
}
  .app {
       width: 430px;
      }
 


   @media screen and (max-width: 480px) {
    .app {
      max-width: 100%;
      margin: 0;
    }
   }


.btn-5 {
  animation: stretch 1.6s infinite;
}
@keyframes stretch {
  0% { transform: scaleX(1); }
  50% { transform: scaleX(1.08); }
  100% { transform: scaleX(1); }
}

.btn-wrap {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 16px;
}

.btn {
  padding: 16px;
  font-size: 16px;
  border-radius: 14px;
  border: none;
  background: #ff0000;
  color: #fff;
  font-weight: bold;
  cursor: pointer;
}


a {
  text-decoration: none;
}