Developing an html page

Introduction
The page under development is located on to this url –
https:/tmt.uksouth.cloudapp.azure.com/webpages/range000.html
I want this script to produce the result found on this url –
https:/tmt.uksouth.cloudapp.azure.com.

There are three problems to be solved
I will give complete access to the test server for the purposes of the development work.
The associated files are
CSS Style sheet Vendor/custom2.css
Data file /TempFiles/TempCount.txt

The first problem is making the basket quantity appear correctly. If you browse to the master url (https:/tmt.uksouth.cloudapp.azure.com) you will see that a white number on ared back ground appears next to the shopping basket. This is how I want the number on the Data file (/TempFiles/tempCount.text) to appear on the development url ( https:/ tmt.uksouth.cloudapp.azure.com/ webpages/range000.html)

The second problem is how this shopping basket and the quantity of items is shown on the mobile device and the desk top device. In the CSS style sheets I have tried to use “display:none;” for the span id concerned – but this does not seem to work.
See #span {.mobile-only (display: none;}} in the CSS style sheets under the two @media definitions
The third problem is the size of the search window and the search icon on the mobile device