If you want to remove the Inner Shadow Mobile Safari form Inputs use this mobile specific CSS:-
/* Remove Inner Shadow on Mobile Safari */
input, optgroup, select, textarea {
-webkit-appearance: none;
}
About the Author

Glenn
A highly experienced Web Designer / Web Developer (Webflow, WordPress, Weebly & Custom), Front-end / Back-end Developer & New Media Specialist, with extensive knowledge of a wide spectrum of technologies in the Development and Creative Industries, built up over a number of years.