响应式表单布局CSS实战教程

<form class="register-form">
  <h2>注册账号</h2>
  
  <div class="form-group">
    <label for="username">用户名</label>
    &lt;input type=&quot;text&quot; id=&quot;username&quot; name=&quot;username&quot; required&gt;
  </div>

  <div class="form-group">
    <label for="email">邮箱</label>
    &lt;input type=&quot;email&quot; id=&quot;email&quot; name=&quot;email&quot; required&gt;
  </div>

  <div class="form-group">
    <label for="password">密码</label>
    &lt;input type=&quot;password&quot; id=&quot;password&quot; name=&quot;password&quot; required&gt;
  </div>

  <div class="form-group">
    <label for="confirm-password">确认密码</label>
    &lt;input type=&quot;password&quot; id=&quot;confirm-password&quot; name=&quot;confirm-password&quot; required&gt;
  </div>

  <button type="submit">注册</button>
</form>

.register-form {
  max-width: 400px;
  margin: 50px auto;
  padding: 20px;
  border: 1px solid #ddd;
  border-radius: 8px;
  font-family: Arial, sans-serif;
  background-color: #f9f9f9;
}

.register-form h2 {
  text-align: center;
  margin-bottom: 20px;
  color: #333;
}

.form-group {
  margin-bottom: 15px;
}

.form-group label {
  display: block;
  margin-bottom: 5px;
  color: #555;
  font-size: 14px;
}

.form-group input {
  width: 100%;
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 4px;
  box-sizing: border-box;
  font-size: 16px;
}

button {
  width: 100%;
  padding: 12px;
  background-color: #007BFF;
  color: white;
  border: none;
  border-radius: 4px;
  font-size: 16px;
  cursor: pointer;
}

button:hover {
  background-color: #0056b3;
}

@media (max-width: 600px) {
  .register-form {
    margin: 20px 15px;
    padding: 15px;
  }

  .form-group label {
    font-size: 13px;
  }

  .form-group input,
  button {
    font-size: 15px;
    padding: 8px;
  }
}