In previous version of Bootstrap (version 2), you had to use
row-fluid inside a fluid container and
row inside a fixed container. In Bootstrap 3,
row-fluid was removed and no longer use it. Bootstrap 3, media queries are all included. You just need to decide if you want to use a fixed width or fluid width layout for your page.
The process of creating the fixed yet responsive layout starts with the
.container class. Next, add rows within a
.row class. Further column can be created using grid classes like
.col-xs-*, .col-sm-*, .col-md-*,.col-lg-* . Here '*' represent grid number.
The following example shows single button dropdown:
The above Bootstrap Fixed Layout example will produce below output: