iOS devices add a lot of annoying styles on form inputs, particularly on input[type=submit]. Shown below are the same simple search form on a desktop browser, and on an iPad
This is the what I use in my projects
* { -webkit-tap-highlight-color: transparent; } a, article, div, h1, h2, h3, h4, h5, h6, img, section, span { -moz-user-select: none; -webkit-user-select: none; } input, select, textarea { -webkit-appearance: none; -webkit-border-radius:0; border-radius: 0; }