reference

https://www.w3schools.com/bootstrap

check

disabled-color: gray-light -> gray-dark inpit disable: placeholder’s color

bootstrap test

Text/Typography

Tables

Images

Jumbotron and Page Header

Wells

Alerts

Button

Button Groups

Glyphicons

Badges and Labels

Progress Bars

Pagination

Pager

List Groups

Panels

Collapse

Tabs and Pills

Form

Input

Media Object

Tooltips

Popover