BUG: Category filter title disappears on mobile

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Describe the bug On small mobile screens, as the category filter dropdown is centred, the user can't read what the dropdown does

To Reproduce Steps to reproduce the behavior:

1. Go to homepage'
2. Screen size < 370 px
3. Scroll down to 'category fiter'
4. See error - can only read first letter

Expected behavior User should be able to read the dropdown title on all devices

Screenshots

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]

Additional context Add any other context about the problem here.