<!DOCTYPE HTML> <style> button { -moz-appearance: none; background: yellow; border: 2px solid fuchsia; padding: 2px; font-size: 10px; width: 68px; border-radius: 0; /* override mobile/android/themes/core/content.css */ } span { display: inline-block; vertical-align: middle; height: 20px; width: 50px; border: 2px solid blue; } </style> <button><span></span></button>