Create defaultTheme Style component

[olivernjeru]

Precursor. I have used this component in like two pages now and it would not be efficient code wise to write the same code twice or more each time I use it instead of writing it once and using it multiple times.

[olivernjeru]

• [x] Create defaultTheme component
• [x] Use defaultTheme component in LogIn.js and SignUp.js

[olivernjeru]

This is solved in make default theme a component i can use across the app