I faced interesting issue when I resize my window in @media only screen and (max-width: 640px) on my screen blue underline appears on my arrow class and I was trying to remove with text-decoration: none; but didn’t help. Also when you resize window smaller like @media only screen and (max-width: 541px) the blue line is still there. But when for example on large screen devices such as @media only screen and (max-width: 1024px) and larger its gone and when you hover on arrow its how supposed to be.
These are media queries that causing blue underline line on my arrow class:
@media only screen and (max-width: 768px)
@media only screen and (max-width: 640px)
@media only screen and (max-width: 541px)
This is my portfolio link : http://codepen.io/Vladimirpak/pen/BpYmGg