Input fields are HTML components that are there for the user to have a spot to include text. Normally they're important for some kind of structure, and generally, they're somewhat overlooked with regards to styling. Possibly a designer will input a cool shading or a soft border-radius, however frequently that is about it.  

Simple Animation Input Field

Floating Placeholders Input Field

Extending Text Input

INPUT with Amazing Focus Effects

ONE Input 3D Form

Beautiful CSS File Inputs

Search Input with Animation

Super Stylish Compliment Input Box

Codepen, Pure CSS Text Box

Contact Form With Hover Effects