What is the difference among col-lg-*, col-md-* and col-sm-* in Bootstrap?

Question

What is the difference among col-lg-* , col-md-* and col-sm-* in Twitter Bootstrap?

Answer 1

Device Sizes and class prefix:

• Extra small devices Phones (<768px) - .col-xs-
• Small devices Tablets (≥768px) - .col-sm-
• Medium devices Desktops (≥992px) - .col-md-
• Large devices Desktops (≥1200px) - .col-lg-

Grid options:

Reference: Grid System