你能帮帮我吗，我不明白为什么html+css在Django中不能正常工作。
我用一个简单的表单上传了两个文件，但是看起来真的很丑。

index.html不带id="upload_container"

<div class="page_thirdblock thirdblock">
 <div class="thirdblock__container _container">
  <form method="POST" enctype="multipart/form-data" class="upload1"> 
    {% csrf_token %}
    <input type="file" name="upload_file">
    <input type="hidden" name="form_type" value="form_1">
    <button type="submit">Upload File 1</button>
  </form>
  <form method="POST" enctype="multipart/form-data" class="upload2">
    {% csrf_token %}
    <input type="file" name="upload_file">
    <input type="hidden" name="form_type" value="form_2">
    <button type="submit">Upload File 2</button>
   </form>
 </div>
</div>

index.html带id="upload_container"

<div class="page_thirdblock thirdblock">
 <div class="thirdblock__container _container">
  <form method="POST" enctype="multipart/form-data" class="upload1" id="upload_container"> 
    {% csrf_token %}
    <input type="file" name="upload_file">
    <input type="hidden" name="form_type" value="form_1">
    <button type="submit">Upload File 1</button>
  </form>
  <form method="POST" enctype="multipart/form-data" class="upload2" id="upload_container">
    {% csrf_token %}
    <input type="file" name="upload_file">
    <input type="hidden" name="form_type" value="form_2">
    <button type="submit">Upload File 2</button>
  </form>
 </div>
</div>

我该怎么弥补？我的意思是得到Browse...按钮，但与css风格。