Header image not reducing for smarphone view

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Posted: 3/13/2018
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If you check http://whistleblowersqld.com.au on a smartphone, you can see two images in the header.
Both have been placed as Imagelinks
The first, "Whistleblowers Queensland" doesn't reduce enough to fit the smartphone width
The second blue image with white text reduces fine
Can anyone help me with how to make the first one reduce properly?
TIA John