<form action="/action_page.php">
   <p>Custom file:</p>
   <div class="custom-file mb-3">
      <input type="file" class="custom-file-input" id="customFile" name="filename">
      <label class="custom-file-label" for="customFile">Choose file</label>
   </div>
   <p>Default file:</p>
   <input type="file" id="myFile" name="filename2">
   <div class="mt-3">
      <button type="submit" class="btn btn-primary">Submit</button>
   </div>
</form>

<form id="file-upload-form" class="uploader-file">
   <input id="file-upload" type="file" name="fileUpload" accept="image/*" />
   <label id="file-drag">
      <img id="file-image" src="#" alt="Preview" class="hidden">
      <span id="start-one">
         <i class="fa fa-download" aria-hidden="true"></i>
         <span class="d-block">Select a file or drag here</span>
         <span id="notimage" class="hidden d-block">Please select image</span>
         <span id="file-upload-btn" class="btn btn-primary">Select a file</span>
      </span>
      <span id="response" class="hidden">
      <span id="messages"></span>
      <progress class="progress" id="file-progress" value="0">
         <span>0</span>%
      </progress>
      </span>
   </label>
</form>