Chrome working fine but Firefox having issues with dropdown

My header dropdown works smoothly in Chrome, but I encounter issues with Firefox. Although the dropdown appears when clicked, I am unable to interact with the forms inside. Furthermore, clicking on the dropdown causes it to close immediately.

HTML

 <div class="dropdown" >
<a id="welcome_dropdown_toggle" class="dropdown-toggle" href="#" data-toggle="dropdown">Sign In <strong class="caret"></strong></a>
  <ul id="welcome_page_dropdown" class="dropdown-menu dropdown-nav pull-right " >
  <%= form_for(:user, url: session_path(:user), :html => {:class => 'form-group login-name', :role => 'form'}) do |f| %>
    <div class="form-group login-name">
      <div class="input-group " style="margin-bottom: 12px;">
       <span class="input-group-addon"><span class="glyphicon glyphicon-user"></span></span>
         <%= f.email_field :email, :class => 'form-control', :placeholder => 'Email', :type => 'text' %>
      </div>
      <div class="form-group login">
        <div class="input-group">
          <span class="input-group-addon"><span class="glyphicon glyphicon-lock"></span></span>
           <%= f.password_field :password, autocomplete: "off", :class => 'form-control', :placeholder => 'Password', :type => 'password' %>
      </div>
    </div>
    <label class="string optional remember-text" for="user_remember_me">
      <%= f.check_box :remember_me %> <%= f.label :remember_me %>
    </label>
    <button type="submit" class="btn btn-primary btn-block">Sign in</button>
     <%= link_to 'Forgot Email/Password?', new_password_path(:user) %>
  </div>
<% end %>
</ul> <!--dropdown-menu -->
</div> <!-- dropdown --> 

CSS

     #welcome_dropdown_toggle{
      margin-right:15px;
      float: right;
      height: 50px;
      width: 150px;
      border-radius: 6px;
      border: none;
      background-color: white;
      font-size: 25px;
      font-weight: bold;
      text-align: center;
      padding: 8px;
   }
   #welcome_dropdown_toggle:hover{
      color:#2b2625;
   }

   #welcome_page_dropdown{
    padding: 15px; 
    padding-bottom: 15px; 
    margin-top: 70px;
    margin-right:15px;
   }

Edit 1

To troubleshoot, I started removing random classes and IDs from the divs. This resulted in the dropdown covering part of the "sign-in" button. Interestingly, I could click on the covered area of the button but nowhere else.

Thanks in advance

Answer №1

After some troubleshooting, I discovered that the element located below a dropdown was causing issues due to its lack of z-index property. By adding z-index:1; to the wrapper of the div beneath it, I successfully resolved the issue and restored functionality to the forms and dropdown menu.

Interestingly, I initially thought that z-index was unnecessary since I could see the dropdown without it. The fact that Chrome and Firefox handled this situation differently only added to my confusion.

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