Documentation and examples for Bootstrap’s media object to construct highly repetitive components like blog comments, tweets, and the like. Example. The media object helps build complex and repetitive components where some media is positioned alongside content that doesn’t wrap around said media. Plus, it does this with only two required ...

Forms. Various form elements have been rebooted for simpler base styles. Here are some of the most notable changes: <fieldset>s have no borders, padding, or margin so they can be easily used as wrappers for individual inputs or groups of inputs. <legend>s, like fieldsets, have also been restyled to be displayed as a heading of sorts. <label>s are set to display: inline-block to allow margin to ...

Alerts. Provide contextual feedback messages for typical user actions with the handful of available and flexible alert messages. Examples. Alerts are available for any length of text, as well as an optional dismiss button.

The Bootstrap v4 grid system has five tiers of classes: xs (extra small), sm (small), md (medium), lg (large), and xl (extra large). You can use nearly any combination of these classes to create more dynamic and flexible layouts. Each tier of classes scales up, meaning if you plan on setting the same widths for xs and sm, you only need to ...

Components and options for laying out your Bootstrap project, including wrapping containers, a powerful grid system, a flexible media object, and responsive utility classes. Containers Choose from a responsive, fixed-width container (meaning its max-width changes at each breakpoint) or fluid-width (meaning it’s 100% wide all the time).

Use our powerful mobile-first flexbox grid to build layouts of all shapes and sizes thanks to a twelve column system, six default responsive tiers, Sass variables and mixins, and dozens of predefined classes.