Fix toolbar-amount placing in mobile device

[slackerzz]

The toolbar amount element is misplaced because of a position: absolute

Description

Fixed Issues (if relevant)

1. Responsive Design Issue on Mobile with Magento 2.1.9 #10941: Responsive Design Issue on Mobile with Magento 2.1.9

Manual testing scenarios

1. Create a cms page with this content:

{{widget type="Magento\Catalog\Block\Product\Widget\NewWidget" display_type="all_products" show_pager="1" products_per_page="4" products_count="16" template="product/widget/new/content/new_grid.phtml" page_var_name="pipexq"}}
{{widget type="Magento\Catalog\Block\Widget\RecentlyViewed" uiComponent="widget_recently_viewed" page_size="4" show_attributes="name,image,price" show_buttons="add_to_cart,add_to_compare,add_to_wishlist" template="product/widget/viewed/grid.phtml"}}

Before the result was:

After the fix the result is:

Contribution checklist

• Pull request has a meaningful description of its purpose
• All commits are accompanied by meaningful commit messages
• All new or changed code is covered with unit/integration tests (if applicable)
• All automated tests passed successfully (all builds on Travis CI are green)