Docs

• Added type="button" to all dismiss buttons in alerts and modals to avoid a bug in which they prevent their parent's form from properly submitting.
• Added simple documentation to Base CSS for .lead.
• Added new CSS test to illustrate how the navbar, static and fixed, behaves.
• Clarified grid sizing copy to include mention of responsive variations.
• Reformatted the LESS docs page to prevent terrible table displays at smaller grid sizes.
• Miscellaneous typos and tweaks.

CSS

• Refactored forms.less to make our selectors more specific for fewer overrides and less code. Instead of a generic input selector and various resets, we target each type of input like input[type="text"], input[type="password"], etc.
• Form field state (e.g., success or error) now applies to checkbox and radio labels.
• Removed redundant CSS on <p> for font-family, font-size, and line-height.
• Removed redundant color declaration from the <label> element.
• Added variables for dropdown dividers border colors.
• legend and .form-actions share the same border-color, #e5e5e5.
• Fixed some responsive issues with input-prepend and -append, notably with the fluid grid.
• Added special CSS to prevent max-width: 100%; on images from messing up Google Maps rendering.
• Scope opened dropdowns to only immediate children to avoid unintended cascade.
• Similarly, scope floated-right dropdowns to immediate children with .pull-right > .dropdown-menu.
• Updated .placeholder() mixin to use & operator in Less for proper output when compiling.
• Added -ms-input-placeholder to .placeholder() mixin.
• Added CSS3 hyphens mixin.
• Fixed a bug in IE7/8 where certain form controls would not show text if the parent had a filter opacity set.