What is the difference between Bootstrap and Bootstrap 3?

Answer»

S.no	Bootstrap	Bootstrap 3
1.	No support for panels.	Support added with a host of classes for panels
2.	FORM actions	Dropped support for form actions.
3.	Gridless than 768px not supported.	Extra-small (LESS than 768px) are now supported.
4.	Only “.alert” class for the danger	Added “danger” and “WARNING” class.

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