Археология кода

<button style="
  background: #ff6b00;
  color: white;
  padding: 12px 24px;
  border: none;
  border-radius: 4px;
  font-size: 16px;
  cursor: pointer;
">
  Купить
</button>

<nav>
  <ul class="menu">
    <li><a href="/screen2/">Главная</a></li>
    <li class="dropdown">
      <a>Каталог ▾</a>
      <ul class="submenu">
        <li><a>Электроника</a></li>
        <li><a>Одежда</a></li>
      </ul>
    </li>
    <li><a href="/contact">
      Контакты</a></li>
  </ul>
</nav>

.like-btn {
  font-size: 24px;
  transition: transform 0.2s;
  cursor: pointer;
}
.like-btn:active {
  transform: scale(1.5);
  color: red;
}
.like-btn.liked {
  color: red;
  animation: pop 0.3s ease;
}
@keyframes pop {
  0%  { transform: scale(1);   }
  50% { transform: scale(1.8); }
  100%{ transform: scale(1);   }
}

<form class="login-form">
  <h2>Вход</h2>
  <input type="email"
    placeholder="Email"
    required>
  <input type="password"
    placeholder="Пароль"
    minlength="8" required>
  <button type="submit">
    Войти
  </button>
  <a href="/forgot">
    Забыли пароль?
  </a>
</form>

.products {
  display: grid;
  grid-template-columns:
    repeat(3, 1fr);
  gap: 20px;
}
.card {
  border: 1px solid #ddd;
  border-radius: 8px;
  padding: 16px;
}
.card img { width: 100%; }
.card .price {
  font-size: 20px;
  font-weight: bold;
}