html - IPhone 5S Mobile Safari Hyperlinks not 'clickable' -

i've been working on website ( http://www.clicks1.co.uk/#contact ). i've come across bug in many of 'click' interactions on page don't work on iphones on others. i've found work on iphone 5, not on iphone 5s.

specifically in contact area, hyperlinked facebook, twitter, , google+ images not open links when tapped on iphone 5s.

it thinking perhaps there's kind of element overlaying hyperlinks blocking attempt press them. still not sure why issue specific iphones , not others.

the solution create invisible absolute positioned div high z-index. div positioned above original hyperlink element , given href link.

<a href="example.com" style="width: 60px; height: 60px; position: absolute; background-color:rgba(0,0,0,0); z-index: 9999;"></a> 

if me want use solution on dynamically sized images/text found giving width , height parameters % (eg width: 40%) values allowed them resize elements above.