v4: Social meta tags (#20825)

* descriptions for getting started pages

* descriptions for layout

* add content page descriptions

* more descriptions, updates to some existing ones

* correct site url

* add social stuff to config for twitter cards

* add twitter meta tags; use large image for homepage and regular card for all others

* add the assets

* more site config

* more social shiz to partial, remove existing meta for the partial, remove page title from homepage for simpler if statements

21 files changed, 21 insertions, 0 deletions

diff --git a/docs/components/alerts.md b/docs/components/alerts.md
index 56e8b089c..54172a673 100644
--- a/docs/components/alerts.md
+++ b/docs/components/alerts.md
@@ -1,6 +1,7 @@
 ---
 layout: docs
 title: Alerts
+description: Provide contextual feedback messages for typical user actions with the handful of available and flexible alert messages.
 group: components
 ---
 
diff --git a/docs/components/breadcrumb.md b/docs/components/breadcrumb.md
index 40d407ddc..8beaa0ae4 100644
--- a/docs/components/breadcrumb.md
+++ b/docs/components/breadcrumb.md
@@ -1,6 +1,7 @@
 ---
 layout: docs
 title: Breadcrumb
+description: Indicate the current page's location within a navigational hierarchy.
 group: components
 ---
 
diff --git a/docs/components/button-group.md b/docs/components/button-group.md
index c14d3d63a..cff38e1b1 100644
--- a/docs/components/button-group.md
+++ b/docs/components/button-group.md
@@ -1,6 +1,7 @@
 ---
 layout: docs
 title: Button group
+description: Group a series of buttons together on a single line with the button group, and super-power them with JavaScript.
 group: components
 ---
 
diff --git a/docs/components/buttons.md b/docs/components/buttons.md
index d5aa453d7..02b14f913 100644
--- a/docs/components/buttons.md
+++ b/docs/components/buttons.md
@@ -1,6 +1,7 @@
 ---
 layout: docs
 title: Buttons
+description: Use Bootstrap's custom button styles for actions in forms, dialogs, and more with support for multiple sizes, states, and more.
 group: components
 redirect_from: "/components/"
 ---
diff --git a/docs/components/card.md b/docs/components/card.md
index 1cf116d86..04f028189 100644
--- a/docs/components/card.md
+++ b/docs/components/card.md
@@ -1,6 +1,7 @@
 ---
 layout: docs
 title: Cards
+description: Bootstrap Cards provide a flexible and extensible content container with multiple variants and options.
 group: components
 ---
 
diff --git a/docs/components/carousel.md b/docs/components/carousel.md
index 5f177432f..5bc299774 100644
--- a/docs/components/carousel.md
+++ b/docs/components/carousel.md
@@ -1,6 +1,7 @@
 ---
 layout: docs
 title: Carousel
+description: A slideshow component for cycling through elements—images or slides of text—like a carousel.
 group: components
 ---
 
diff --git a/docs/components/collapse.md b/docs/components/collapse.md
index ebbefeca4..aa82127ed 100644
--- a/docs/components/collapse.md
+++ b/docs/components/collapse.md
@@ -1,6 +1,7 @@
 ---
 layout: docs
 title: Collapse
+description: Toggle the visibility of content across your project with a few classes and our JavaScript plugins.
 group: components
 ---
 
diff --git a/docs/components/dropdowns.md b/docs/components/dropdowns.md
index d43f5e17d..db26ffe87 100644
--- a/docs/components/dropdowns.md
+++ b/docs/components/dropdowns.md
@@ -1,6 +1,7 @@
 ---
 layout: docs
 title: Dropdowns
+description: Toggle contextual overlays for displaying lists of links and more with the Bootstrap dropdown plugin.
 group: components
 ---
 
diff --git a/docs/components/forms.md b/docs/components/forms.md
index 09d0d4f8f..de66cde98 100644
--- a/docs/components/forms.md
+++ b/docs/components/forms.md
@@ -1,6 +1,7 @@
 ---
 layout: docs
 title: Forms
+description: Examples and usage guidelines for from controls, form layouts, and custom forms.
 group: components
 ---
 
diff --git a/docs/components/input-group.md b/docs/components/input-group.md
index 21f944d64..0082a62b6 100644
--- a/docs/components/input-group.md
+++ b/docs/components/input-group.md
@@ -1,6 +1,7 @@
 ---
 layout: docs
 title: Input group
+description: Extend form controls with the input group.
 group: components
 ---
 
diff --git a/docs/components/jumbotron.md b/docs/components/jumbotron.md
index 9dd3c8294..e47becee9 100644
--- a/docs/components/jumbotron.md
+++ b/docs/components/jumbotron.md
@@ -1,6 +1,7 @@
 ---
 layout: docs
 title: Jumbotron
+description: Lightweight, flexible component for showcasing hero unit style content.
 group: components
 ---
 
diff --git a/docs/components/list-group.md b/docs/components/list-group.md
index 8b3b9cd88..7b159bc79 100644
--- a/docs/components/list-group.md
+++ b/docs/components/list-group.md
@@ -1,6 +1,7 @@
 ---
 layout: docs
 title: List group
+description: Learn about Bootstrap's list group component for rendering series of related content.
 group: components
 ---
 
diff --git a/docs/components/modal.md b/docs/components/modal.md
index 55a0878b6..26676cacc 100644
--- a/docs/components/modal.md
+++ b/docs/components/modal.md
@@ -1,6 +1,7 @@
 ---
 layout: docs
 title: Modal
+description: Learn how to use Bootstrap's modals to add dialog prompts to your site.
 group: components
 ---
 
diff --git a/docs/components/navbar.md b/docs/components/navbar.md
index 10f445e8f..6cd770dfd 100644
--- a/docs/components/navbar.md
+++ b/docs/components/navbar.md
@@ -1,6 +1,7 @@
 ---
 layout: docs
 title: Navbar
+description: Documentation and examples for Bootstrap's powerful, responsive navigation header.
 group: components
 ---
 
diff --git a/docs/components/navs.md b/docs/components/navs.md
index 78d476e1c..2b76f36e3 100644
--- a/docs/components/navs.md
+++ b/docs/components/navs.md
@@ -1,6 +1,7 @@
 ---
 layout: docs
 title: Navs
+description: Documentation and examples for how to use Bootstrap's included navigation components.
 group: components
 ---
 
diff --git a/docs/components/pagination.md b/docs/components/pagination.md
index 68c906c77..7a454a51f 100644
--- a/docs/components/pagination.md
+++ b/docs/components/pagination.md
@@ -1,6 +1,7 @@
 ---
 layout: docs
 title: Pagination
+description: Documentation and examples for showing pagination links.
 group: components
 ---
 
diff --git a/docs/components/popovers.md b/docs/components/popovers.md
index a723f33e3..bfaaf270e 100644
--- a/docs/components/popovers.md
+++ b/docs/components/popovers.md
@@ -1,6 +1,7 @@
 ---
 layout: docs
 title: Popovers
+description: Documentation and examples for adding Bootstrap popovers to your site.
 group: components
 ---
 
diff --git a/docs/components/progress.md b/docs/components/progress.md
index 5e0abc5fe..d604e9e7c 100644
--- a/docs/components/progress.md
+++ b/docs/components/progress.md
@@ -1,6 +1,7 @@
 ---
 layout: docs
 title: Progress
+description: Documentation and examples for using Bootstrap progress bars.
 group: components
 ---
 
diff --git a/docs/components/scrollspy.md b/docs/components/scrollspy.md
index 622469aa1..52b7c29cd 100644
--- a/docs/components/scrollspy.md
+++ b/docs/components/scrollspy.md
@@ -1,6 +1,7 @@
 ---
 layout: docs
 title: Scrollspy
+description: Documentation and examples for the scrollspy plugin with Bootstrap's navigation components.
 group: components
 ---
 
diff --git a/docs/components/tag.md b/docs/components/tag.md
index 09608931a..d292cad22 100644
--- a/docs/components/tag.md
+++ b/docs/components/tag.md
@@ -1,6 +1,7 @@
 ---
 layout: docs
 title: Tags
+description: Documentation and examples for tags, our small label-badge component.
 group: components
 ---
 
diff --git a/docs/components/tooltips.md b/docs/components/tooltips.md
index e989307ca..10285701f 100644
--- a/docs/components/tooltips.md
+++ b/docs/components/tooltips.md
@@ -1,6 +1,7 @@
 ---
 layout: docs
 title: Tooltips
+description: Documentation and examples for adding custom Bootstrap tooltips with CSS and JavaScript.
 group: components
 ---