5 Common Design Mistakes on Navigation Bar Buttons - UX Movement
mobile-scrollup-bar. Users use their thumbs to scroll and their thumbs are closer to the bottom of the screen. This means they can hit the navigation bar when they scroll down a page. The bar can also distract users when they’re viewing content.
Why the Email Confirmation Field Must Die - UX Movement
email-field-first. Placing the email field first can prevent this. This is because it’s the start of the form and they don’t feel the need to rush. Placing the email field in the middle or at the end of your form is not ideal because that’s when users get tired of typing and are most eager to finish.