• Documente: actualizări majore la nivelul structurii generale, exemplelor și fragmentelor de cod. De asemenea, a devenit receptiv cu noile interogări media.
• Documente: toate paginile de documente sunt acum alimentate de șabloane Mustache, iar șirurile sunt împachetate în etichete i18n pentru traducere de către Centrul de traduceri Twitter. Toate modificările aduse documentației trebuie făcute aici și apoi compilate (similar cu CSS-ul nostru și LESS).
• Structura directorului Repo: a eliminat CSS-ul compilat de la rădăcină în favoarea unui link mare de descărcare directă pe pagina de pornire a documentelor. CSS compilat este în /docs/assets/css/.
• Documente și depozit: un singur fișier make, trebuie doar să tastați makeîn Terminal și să obțineți documente și CSS actualizate.

Sistem grilă

• Sistem de grilă actualizat, acum doar 12 coloane în loc de 16
• Abordarea receptivă înseamnă că proiectele dvs. funcționează practic de pe smartphone-uri, tablete și multe altele
• S-a eliminat suportul pentru coloanele de grilă neutilizate (în mod implicit) pentru 17-24 de coloane

Responsive (interogări media)

• Interogări media adăugate pentru asistență de bază pe dispozitivele mobile și tablete
• Responsive CSS este compilat separat, ca bootstrap-responsive.css

Tipografie

• h4elementele au fost reduse de la 16px la 14px cu o valoare implicită line-heightde 18px
• h5elementele au fost reduse de la 14px la 12px
• h6elementele au fost reduse de la 13px la 11px
• Opțiune aliniată la dreapta pentru ghilimele dacăfloat: right;

Cod

• Stilul grafic nou pentru<code>
• Stilurile Google Code Prettify au fost actualizate (pe baza ideilor GitHub)

Mese

• Suport îmbunătățit pentru colspanșirowspan
• Stiluri limitate acum la noua clasă de bază,.table
• Table classes standardized with .table- required as a prefix
• Removed unused table color options (too much code for such little impact)
• Dropped support for TableSorter

Buttons

• New classes for colors and sizes, all prefixed with .btn-
• IE9: removed gradients and added rounded corners
• Updated active state to make styling clearer in button groups (new) and look better with custom transition
• New mixin, .buttonBackground, to set button gradients
• The .secondary class was removed from modal examples in our docs as it never had associated styles.

Forms

• Default form style is now vertical (stacked) to use less CSS and add greater flexibility
• Form classes standardized with .form- required as a prefix
• New built-in form defaults for search, inline, and horizontal forms
• For horizontal forms, previous classes .clearfix and .input are equivalent to the new .control-group and .controls.
• More flexible horizontal form markup with classes for all styling, including new optional class for the label
• Form states: colors updated and customizable via new LESS variables

Icons, by Glyphicons

• New Glyphicons Halflings icon set added in sprite form, in black and white
• Simple markup required for an icon in tons of contexts: <i class="icon-cog"></>
• Add another class, .icon-white, for white variation of the same icon

Button groups and dropdowns

• Two brand new components in 2.0: button groups and button dropdowns
• Dependency: button dropdowns are built on button groups, and therefore require all their styles
• Button groups, .btn-group, can be grouped one level higher with a button toolbar, .btn-toolbar

Navigation

• Tabs and pills now require the use of a new base class, .nav, on their <ul> and the class names are now .nav-pills and .nav-tabs.
• New nav list variation added that uses the same base class, .nav
• Vertical tabs and pills have been added—just add .nav-stacked to the <ul>
• Pills were restyled to be less rounded by default
• Pills now have dropdown menu support (they share the same markup and styles as tabs)

Navbar (formerly topbar)

• Base class changed from .topbar to .navbar
• Now supports static position (default behavior, not fixed) and fixed to the top of viewport via .navbar-fixed-top (previously only supported fixed)
• Added vertical dividers to top-level nav
• Improved support for inline forms in the navbar, which now require .navbar-form to properly scope styles to only the intended forms.
• Navbar search form now requires use of the .navbar-search class and its input the use of .search-query. To position the search form, you must use .pull-left or .pull-right.
• Added optional responsive markup for collapsing navbar contents for smaller resolutions and devices. See navbar docs for how to utilize.

Dropdown menus

• Updated the .dropdown-menu to tighten up spacing
• Now requires you to add a <span class="caret"></span> to show the dropdown arrow
• Now requires you to add a data-toggle="dropdown" attribute to obtain toggling behavior
• The navbar (fixed topbar) has brand new dropdowns. Gone are the dark versions and in their place are the standard white ones with an additional caret at their tops for clarity of position.

Labels

• Label colors updated to match form state colors
• Not only do they match graphically, but they are powered by the same new variables

Thumbnails

• Formerly .media-grid, now just .thumbnails, we've thoroughly extended this component for more uses while maintaining overall simplicity out of the box.
• Individual thumbnails now require .thumbnail class

Alerts

• New base class: .alert instead of .alert-message
• Class names standardized for other options, now all starting with .alert-
• Redesigned base alert styles to combine the default alerts and block-level alerts into one
• Block level alert class changed: .alert-block instead of .block-message

Progress bars

• New in 2.0
• Features multiple styles via classes, including striped and animated variations via CSS3

Miscellaneous components

• Added documentation for the well component and the close icon (used in modals and alerts)

Tooltips

• The plugin method has been renamed from twipsy() to tooltip(), and the class name changed from twipsy to tooltip.
• The placement option value that was below is now bottom, and above is now top.
• The animate option was renamed to animation.
• The html option was removed, as the tooltips default to allowing HTML now.

Popovers

• Child elements now properly namespaced: .title to .popover-title, .inner to .popover-inner, and .content to .popover-content.
• The placement option value that was below is now bottom, and above is now top.

New plugins

• Collapse
• Carousel
• Typeahead