Hi Nicola,
When viewing the site on my mobile phone, the subtitle and buttons in the Welcome section dissappear, was that intentional?
Did you add code to hide it on mobile devices?
Your padding settings are causing the image to be very tall on bile devices and doesn’t vertically align the title.
Try using percentages for the padding instead of pixels.
You will see a drop down net to the padding settings which allows you to select between pixels or percentage.