my placeholder isn't showing up even tho the first line did in the same exercise

Question

I am training laravel CRUD and Placeholder doesn't seems to work on my code although the first code works fine

here is my code that doesn't work

<div class="form group">
  <label for="Content">Content</label>
  <textarea name="content" id="Content" rows="3" class="form-control" 
  placeholder="Hello">
  </textarea>
</div>

Here is the Code that works before

<div class="form group">
  <label for="title">Title</label>
  <input type="text" name="title" id="title" class="form-control" 
  placeholder="Enter Post Title">
</div>