diff --git a/package-lock.json b/package-lock.json
index b0e74a134db3..5043c8cc4ff5 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1164,6 +1164,12 @@
         "fastq": "^1.6.0"
       }
     },
+    "@polka/url": {
+      "version": "1.0.0-next.11",
+      "resolved": "https://registry.npmjs.org/@polka/url/-/url-1.0.0-next.11.tgz",
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+      "dev": true
+    },
     "@rollup/plugin-babel": {
       "version": "5.2.1",
       "resolved": "https://registry.npmjs.org/@rollup/plugin-babel/-/plugin-babel-5.2.1.tgz",
@@ -1483,6 +1489,12 @@
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+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/array-find-index/-/array-find-index-1.0.2.tgz",
+      "integrity": "sha1-3wEKoSh+Fku9pvlyOwqWoexBh6E=",
+      "dev": true
+    },
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       "resolved": "https://registry.npmjs.org/array-includes/-/array-includes-3.1.1.tgz",
@@ -3070,6 +3082,12 @@
         "utils-merge": "1.0.1"
       }
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+    "console-clear": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/console-clear/-/console-clear-1.1.1.tgz",
+      "integrity": "sha512-pMD+MVR538ipqkG5JXeOEbKWS5um1H4LUUccUQG68qpeqBYbzYy79Gh55jkd2TtPdRfUaLWdv6LPP//5Zt0aPQ==",
+      "dev": true
+    },
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       "resolved": "https://registry.npmjs.org/contains-path/-/contains-path-0.1.0.tgz",
@@ -3214,6 +3232,15 @@
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       "dev": true
     },
+    "currently-unhandled": {
+      "version": "0.4.1",
+      "resolved": "https://registry.npmjs.org/currently-unhandled/-/currently-unhandled-0.4.1.tgz",
+      "integrity": "sha1-mI3zP+qxke95mmE2nddsF635V+o=",
+      "dev": true,
+      "requires": {
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+      }
+    },
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       "resolved": "https://registry.npmjs.org/custom-event/-/custom-event-1.0.1.tgz",
@@ -3503,6 +3530,208 @@
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+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/delay-cli/-/delay-cli-1.1.0.tgz",
+      "integrity": "sha512-s+DSq4ngTvKXgl2pO3HutcnXgmSZ2/CgnWzVMrQDfK0hX+jjm31zVs8WrzstXKbOFjllt+5rIuBTCNFlZCk+Fw==",
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+      "requires": {
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+          "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-4.1.0.tgz",
+          "integrity": "sha1-1UVjW+HjPFQmScaRc+Xeas+uNN0=",
+          "dev": true
+        },
+        "camelcase-keys": {
+          "version": "4.2.0",
+          "resolved": "https://registry.npmjs.org/camelcase-keys/-/camelcase-keys-4.2.0.tgz",
+          "integrity": "sha1-oqpfsa9oh1glnDLBQUJteJI7m3c=",
+          "dev": true,
+          "requires": {
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+            "map-obj": "^2.0.0",
+            "quick-lru": "^1.0.0"
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+          "resolved": "https://registry.npmjs.org/find-up/-/find-up-2.1.0.tgz",
+          "integrity": "sha1-RdG35QbHF93UgndaK3eSCjwMV6c=",
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+          "resolved": "https://registry.npmjs.org/indent-string/-/indent-string-3.2.0.tgz",
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+            "parse-json": "^4.0.0",
+            "pify": "^3.0.0",
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+          "integrity": "sha1-K1aLJl7slExtnA3pw9u7ygNUzY4=",
+          "dev": true,
+          "requires": {
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+            "path-exists": "^3.0.0"
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+          "integrity": "sha1-plzSkIepJZi4eRJXpSPgISIqwfk=",
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+          "resolved": "https://registry.npmjs.org/meow/-/meow-4.0.1.tgz",
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+            "decamelize-keys": "^1.0.0",
+            "loud-rejection": "^1.0.0",
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+            "minimist-options": "^3.0.1",
+            "normalize-package-data": "^2.3.4",
+            "read-pkg-up": "^3.0.0",
+            "redent": "^2.0.0",
+            "trim-newlines": "^2.0.0"
+          }
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+          "version": "3.0.2",
+          "resolved": "https://registry.npmjs.org/minimist-options/-/minimist-options-3.0.2.tgz",
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+          "dev": true,
+          "requires": {
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+            "is-plain-obj": "^1.1.0"
+          }
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+          "resolved": "https://registry.npmjs.org/p-limit/-/p-limit-1.3.0.tgz",
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+          "dev": true,
+          "requires": {
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+          "resolved": "https://registry.npmjs.org/p-locate/-/p-locate-2.0.0.tgz",
+          "integrity": "sha1-IKAQOyIqcMj9OcwuWAaA893l7EM=",
+          "dev": true,
+          "requires": {
+            "p-limit": "^1.1.0"
+          }
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+        "p-try": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/p-try/-/p-try-1.0.0.tgz",
+          "integrity": "sha1-y8ec26+P1CKOE/Yh8rGiN8GyB7M=",
+          "dev": true
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+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/parse-json/-/parse-json-4.0.0.tgz",
+          "integrity": "sha1-vjX1Qlvh9/bHRxhPmKeIy5lHfuA=",
+          "dev": true,
+          "requires": {
+            "error-ex": "^1.3.1",
+            "json-parse-better-errors": "^1.0.1"
+          }
+        },
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+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/path-exists/-/path-exists-3.0.0.tgz",
+          "integrity": "sha1-zg6+ql94yxiSXqfYENe1mwEP1RU=",
+          "dev": true
+        },
+        "path-type": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/path-type/-/path-type-3.0.0.tgz",
+          "integrity": "sha512-T2ZUsdZFHgA3u4e5PfPbjd7HDDpxPnQb5jN0SrDsjNSuVXHJqtwTnWqG0B1jZrgmJ/7lj1EmVIByWt1gxGkWvg==",
+          "dev": true,
+          "requires": {
+            "pify": "^3.0.0"
+          }
+        },
+        "pify": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/pify/-/pify-3.0.0.tgz",
+          "integrity": "sha1-5aSs0sEB/fPZpNB/DbxNtJ3SgXY=",
+          "dev": true
+        },
+        "quick-lru": {
+          "version": "1.1.0",
+          "resolved": "https://registry.npmjs.org/quick-lru/-/quick-lru-1.1.0.tgz",
+          "integrity": "sha1-Q2CxfGETatOAeDl/8RQW4Ybc+7g=",
+          "dev": true
+        },
+        "read-pkg": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/read-pkg/-/read-pkg-3.0.0.tgz",
+          "integrity": "sha1-nLxoaXj+5l0WwA4rGcI3/Pbjg4k=",
+          "dev": true,
+          "requires": {
+            "load-json-file": "^4.0.0",
+            "normalize-package-data": "^2.3.2",
+            "path-type": "^3.0.0"
+          }
+        },
+        "read-pkg-up": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/read-pkg-up/-/read-pkg-up-3.0.0.tgz",
+          "integrity": "sha1-PtSWaF26D4/hGNBpHcUfSh/5bwc=",
+          "dev": true,
+          "requires": {
+            "find-up": "^2.0.0",
+            "read-pkg": "^3.0.0"
+          }
+        },
+        "redent": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/redent/-/redent-2.0.0.tgz",
+          "integrity": "sha1-wbIAe0LVfrE4kHmzyDM2OdXhzKo=",
+          "dev": true,
+          "requires": {
+            "indent-string": "^3.0.0",
+            "strip-indent": "^2.0.0"
+          }
+        },
+        "strip-indent": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/strip-indent/-/strip-indent-2.0.0.tgz",
+          "integrity": "sha1-XvjbKV0B5u1sv3qrlpmNeCJSe2g=",
+          "dev": true
+        },
+        "trim-newlines": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/trim-newlines/-/trim-newlines-2.0.0.tgz",
+          "integrity": "sha1-tAPQuRvlDDMd/EuC7s6yLD3hbSA=",
+          "dev": true
+        }
+      }
+    },
     "depd": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/depd/-/depd-1.1.2.tgz",
@@ -5126,6 +5355,12 @@
         "has-symbols": "^1.0.1"
       }
     },
+    "get-port": {
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/get-port/-/get-port-3.2.0.tgz",
+      "integrity": "sha1-3Xzn3hh8Bsi/NTeWrHHgmfCYDrw=",
+      "dev": true
+    },
     "get-proxy": {
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/get-proxy/-/get-proxy-2.1.0.tgz",
@@ -6627,6 +6862,12 @@
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       "dev": true
     },
+    "kleur": {
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/kleur/-/kleur-3.0.3.tgz",
+      "integrity": "sha512-eTIzlVOSUR+JxdDFepEYcBMtZ9Qqdef+rnzWdRZuMbOywu5tO2w2N7rqjoANZ5k9vywhL6Br1VRjUIgTQx4E8w==",
+      "dev": true
+    },
     "known-css-properties": {
       "version": "0.19.0",
       "resolved": "https://registry.npmjs.org/known-css-properties/-/known-css-properties-0.19.0.tgz",
@@ -6783,6 +7024,12 @@
         }
       }
     },
+    "local-access": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/local-access/-/local-access-1.1.0.tgz",
+      "integrity": "sha512-XfegD5pyTAfb+GY6chk283Ox5z8WexG56OvM06RWLpAc/UHozO8X6xAxEkIitZOtsSMM1Yr3DkHgW5W+onLhCw==",
+      "dev": true
+    },
     "locate-path": {
       "version": "5.0.0",
       "resolved": "https://registry.npmjs.org/locate-path/-/locate-path-5.0.0.tgz",
@@ -7002,6 +7249,16 @@
         "js-tokens": "^3.0.0 || ^4.0.0"
       }
     },
+    "loud-rejection": {
+      "version": "1.6.0",
+      "resolved": "https://registry.npmjs.org/loud-rejection/-/loud-rejection-1.6.0.tgz",
+      "integrity": "sha1-W0b4AUft7leIcPCG0Eghz5mOVR8=",
+      "dev": true,
+      "requires": {
+        "currently-unhandled": "^0.4.1",
+        "signal-exit": "^3.0.0"
+      }
+    },
     "lowercase-keys": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/lowercase-keys/-/lowercase-keys-1.0.1.tgz",
@@ -7310,6 +7567,12 @@
         "minimist": "^1.2.5"
       }
     },
+    "mri": {
+      "version": "1.1.6",
+      "resolved": "https://registry.npmjs.org/mri/-/mri-1.1.6.tgz",
+      "integrity": "sha512-oi1b3MfbyGa7FJMP9GmLTttni5JoICpYBRlq+x5V16fZbLsnL9N3wFqqIm/nIG43FjUFkFh9Epzp/kzUGUnJxQ==",
+      "dev": true
+    },
     "ms": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
@@ -9772,6 +10035,15 @@
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       "dev": true
     },
+    "sade": {
+      "version": "1.7.4",
+      "resolved": "https://registry.npmjs.org/sade/-/sade-1.7.4.tgz",
+      "integrity": "sha512-y5yauMD93rX840MwUJr7C1ysLFBgMspsdTo4UVrDg3fXDvtwOyIqykhVAAm6fk/3au77773itJStObgK+LKaiA==",
+      "dev": true,
+      "requires": {
+        "mri": "^1.1.0"
+      }
+    },
     "safe-buffer": {
       "version": "5.1.2",
       "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz",
@@ -9820,6 +10092,12 @@
         }
       }
     },
+    "semiver": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/semiver/-/semiver-1.1.0.tgz",
+      "integrity": "sha512-QNI2ChmuioGC1/xjyYwyZYADILWyW6AmS1UH6gDj/SFUUUS4MBAWs/7mxnkRPc/F4iHezDP+O8t0dO8WHiEOdg==",
+      "dev": true
+    },
     "semver": {
       "version": "5.7.1",
       "resolved": "https://registry.npmjs.org/semver/-/semver-5.7.1.tgz",
@@ -10092,6 +10370,33 @@
         }
       }
     },
+    "sirv": {
+      "version": "1.0.7",
+      "resolved": "https://registry.npmjs.org/sirv/-/sirv-1.0.7.tgz",
+      "integrity": "sha512-QMT2OTD3CTr8de9VByPmvSEeyt6k8/Cxg0J2kQJ5HNhIWfhFg9ypcIWWzez9rPWnGj+WtJ7AZD/MdT/vdilV/A==",
+      "dev": true,
+      "requires": {
+        "@polka/url": "^1.0.0-next.9",
+        "mime": "^2.3.1",
+        "totalist": "^1.0.0"
+      }
+    },
+    "sirv-cli": {
+      "version": "1.0.8",
+      "resolved": "https://registry.npmjs.org/sirv-cli/-/sirv-cli-1.0.8.tgz",
+      "integrity": "sha512-bJI+kkzQvMKfAOfgLzv09kWsdymLm39LgKmGjacB19GHIAQLCvXXg8e8HzcofTjDZlA8zVv4dQjU9SWkNzkJhw==",
+      "dev": true,
+      "requires": {
+        "console-clear": "^1.1.0",
+        "get-port": "^3.2.0",
+        "kleur": "^3.0.0",
+        "local-access": "^1.0.1",
+        "sade": "^1.6.0",
+        "semiver": "^1.0.0",
+        "sirv": "^1.0.7",
+        "tinydate": "^1.0.0"
+      }
+    },
     "slash": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/slash/-/slash-2.0.0.tgz",
@@ -11362,6 +11667,12 @@
       "integrity": "sha1-8y6srFoXW+ol1/q1Zas+2HQe9W8=",
       "dev": true
     },
+    "tinydate": {
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/tinydate/-/tinydate-1.3.0.tgz",
+      "integrity": "sha512-7cR8rLy2QhYHpsBDBVYnnWXm8uRTr38RoZakFSW7Bs7PzfMPNZthuMLkwqZv7MTu8lhQ91cOFYS5a7iFj2oR3w==",
+      "dev": true
+    },
     "tmp": {
       "version": "0.2.1",
       "resolved": "https://registry.npmjs.org/tmp/-/tmp-0.2.1.tgz",
@@ -11458,6 +11769,12 @@
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       "dev": true
     },
+    "totalist": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/totalist/-/totalist-1.1.0.tgz",
+      "integrity": "sha512-gduQwd1rOdDMGxFG1gEvhV88Oirdo2p+KjoYFU7k2g+i7n6AFFbDQ5kMPUsW0pNbfQsB/cwXvT1i4Bue0s9g5g==",
+      "dev": true
+    },
     "touch": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/touch/-/touch-3.1.0.tgz",
diff --git a/package.json b/package.json
index 5ac6be8d658d..e8531a6a5c4b 100644
--- a/package.json
+++ b/package.json
@@ -53,11 +53,11 @@
     "docs-linkinator": "linkinator _gh_pages --recurse --silent --skip \"^(?!http://localhost)\"",
     "docs-vnu": "node build/vnu-jar.js",
     "docs-lint": "npm-run-all --parallel docs-vnu docs-linkinator",
-    "docs-pa11y": "pa11y-ci --config build/.pa11yci.json --sitemap http://localhost:9001/sitemap.xml --sitemap-find https://getbootstrap.com --sitemap-replace http://localhost:9001 --json > pa11y-ci-results.json",
+    "docs-pa11y": "delay 3 && pa11y-ci --config build/.pa11yci.json --sitemap http://localhost:9001/sitemap.xml --sitemap-find https://getbootstrap.com --sitemap-replace http://localhost:9001 --json > pa11y-ci-results.json",
     "docs-pa11y-html": "pa11y-ci-reporter-html -d .pa11y",
     "docs-accessibility": "npm-run-all --parallel --race docs-serve-only docs-pa11y",
     "docs-serve": "hugo server --port 9001 --disableFastRender",
-    "docs-serve-only": "npx sirv-cli _gh_pages --port 9001",
+    "docs-serve-only": "sirv _gh_pages --port 9001",
     "lockfile-lint": "lockfile-lint --allowed-hosts npm --allowed-schemes https: --empty-hostname false --type npm --path package-lock.json",
     "update-deps": "ncu -u -x karma-browserstack-launcher,terser && npm update && echo Manually update site/assets/js/vendor",
     "release": "npm-run-all dist release-sri docs-build release-zip*",
@@ -105,6 +105,7 @@
     "bundlewatch": "^0.3.1",
     "clean-css-cli": "^4.3.0",
     "cross-env": "^7.0.2",
+    "delay-cli": "^1.1.0",
     "eslint": "^7.13.0",
     "eslint-config-xo": "^0.33.1",
     "eslint-plugin-import": "^2.22.1",
@@ -137,6 +138,7 @@
     "rollup-plugin-istanbul": "^2.0.1",
     "sass": "^1.29.0",
     "shelljs": "^0.8.4",
+    "sirv-cli": "^1.0.8",
     "stylelint": "^13.7.2",
     "stylelint-config-twbs-bootstrap": "^2.1.0",
     "terser": "5.1.0",