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_dropdowns.scss 4.6KB

    // // Dropdown menus // -------------------------------------------------- // Dropdown arrow/caret .caret { display: inline-block; width: 0; height: 0; margin-left: 2px; vertical-align: middle; border-top: $caret-width-base solid; border-right: $caret-width-base solid transparent; border-left: $caret-width-base solid transparent; } // The dropdown wrapper (div) .dropdown { position: relative; } // Prevent the focus on the dropdown toggle when closing dropdowns .dropdown-toggle:focus { outline: 0; } // The dropdown menu (ul) .dropdown-menu { position: absolute; top: 100%; left: 0; z-index: $zindex-dropdown; display: none; // none by default, but block on "open" of the menu float: left; min-width: 160px; padding: 5px 0; margin: 2px 0 0; // override default ul list-style: none; font-size: $font-size-base; background-color: $dropdown-bg; border: 1px solid $dropdown-fallback-border; // IE8 fallback border: 1px solid $dropdown-border; border-radius: $border-radius-base; @include box-shadow(0 6px 12px rgba(0,0,0,.175)); background-clip: padding-box; // Aligns the dropdown menu to right // // Deprecated as of 3.1.0 in favor of `.dropdown-menu-[dir]` &.pull-right { right: 0; left: auto; } // Dividers (basically an hr) within the dropdown .divider { @include nav-divider($dropdown-divider-bg); } // Links within the dropdown menu > li > a { display: block; padding: 3px 20px; clear: both; font-weight: normal; line-height: $line-height-base; color: $dropdown-link-color; white-space: nowrap; // prevent links from randomly breaking onto new lines } } // Hover/Focus state .dropdown-menu > li > a { &:hover, &:focus { text-decoration: none; color: $dropdown-link-hover-color; background-color: $dropdown-link-hover-bg; } } // Active state .dropdown-menu > .active > a { &, &:hover, &:focus { color: $dropdown-link-active-color; text-decoration: none; outline: 0; background-color: $dropdown-link-active-bg; } } // Disabled state // // Gray out text and ensure the hover/focus state remains gray .dropdown-menu > .disabled > a { &, &:hover, &:focus { color: $dropdown-link-disabled-color; } } // Nuke hover/focus effects .dropdown-menu > .disabled > a { &:hover, &:focus { text-decoration: none; background-color: transparent; background-image: none; // Remove CSS gradient @include reset-filter(); cursor: not-allowed; } } // Open state for the dropdown .open { // Show the menu > .dropdown-menu { display: block; } // Remove the outline when :focus is triggered > a { outline: 0; } } // Menu positioning // // Add extra class to `.dropdown-menu` to flip the alignment of the dropdown // menu with the parent. .dropdown-menu-right { left: auto; // Reset the default from `.dropdown-menu` right: 0; } // With v3, we enabled auto-flipping if you have a dropdown within a right // aligned nav component. To enable the undoing of that, we provide an override // to restore the default dropdown menu alignment. // // This is only for left-aligning a dropdown menu within a `.navbar-right` or // `.pull-right` nav component. .dropdown-menu-left { left: 0; right: auto; } // Dropdown section headers .dropdown-header { display: block; padding: 3px 20px; font-size: $font-size-small; line-height: $line-height-base; color: $dropdown-header-color; } // Backdrop to catch body clicks on mobile, etc. .dropdown-backdrop { position: fixed; left: 0; right: 0; bottom: 0; top: 0; z-index: ($zindex-dropdown - 10); } // Right aligned dropdowns .pull-right > .dropdown-menu { right: 0; left: auto; } // Allow for dropdowns to go bottom up (aka, dropup-menu) // // Just add .dropup after the standard .dropdown class and you're set, bro. // TODO: abstract this so that the navbar fixed styles are not placed here? .dropup, .navbar-fixed-bottom .dropdown { // Reverse the caret .caret { border-top: 0; border-bottom: $caret-width-base solid; content: ""; } // Different positioning for bottom up menu .dropdown-menu { top: auto; bottom: 100%; margin-bottom: 1px; } } // Component alignment // // Reiterate per navbar.less and the modified component alignment there. @media (min-width: $grid-float-breakpoint) { .navbar-right { .dropdown-menu { right: 0; left: auto; } // Necessary for overrides of the default right aligned menu. // Will remove come v4 in all likelihood. .dropdown-menu-left { left: 0; right: auto; } } }