Add style declaration for css file

docs/index.html

@@ -6,7 +6,7 @@
 <title>HamburgerMenu &#9776; Specification Cases</title>
 <link rel=icon       href=https://centerkey.com/graphics/bookmark.png>
 <link rel=stylesheet href=https://cdn.jsdelivr.net/npm/@fortawesome/[email protected]/css/all.min.css>
-<link rel=stylesheet href=https://cdn.jsdelivr.net/npm/dna.js@1.7/dist/dna.css>
+<link rel=stylesheet href=https://cdn.jsdelivr.net/npm/dna.js@1.8/dist/dna.css>
 <link rel=stylesheet href=https://cdn.jsdelivr.net/npm/[email protected]/dist/reset.min.css>
 <style>
    body { text-align: center; color: gray; background-color: black; }
@@ -62,7 +62,7 @@ <h2>Specification Cases</h2>
 </footer>
 
 <script src=https://cdn.jsdelivr.net/npm/[email protected]/dist/jquery.min.js></script>
-<script src=https://cdn.jsdelivr.net/npm/dna.js@1.7/dist/dna.min.js></script>
+<script src=https://cdn.jsdelivr.net/npm/dna.js@1.8/dist/dna.min.js></script>
 <script src=https://cdn.jsdelivr.net/npm/[email protected]/dist/lib-x.min.js></script>
 <script src=hamburger-menu.js></script>
 <script>$('.version-number').text(hamburgerMenu.version);</script>

package.json

@@ -6,6 +6,7 @@
    "type": "module",
    "main": "dist/hamburger-menu.css",
    "browser": "dist/hamburger-menu.min.css",
+   "style": "dist/hamburger-menu.css",
    "files": [
       "dist"
    ],
@@ -50,9 +51,9 @@
       "@babel/preset-env": "~7.14",
       "@fortawesome/fontawesome-free": "~5.15",
       "babel-minify": "~0.5",
-      "browser-sync": "~2.26",
+      "browser-sync": "~2.27",
       "cssnano": "~5.0",
-      "dna.js": "~1.7",
+      "dna.js": "~1.8",
       "gulp": "~4.0",
       "gulp-append-prepend": "~1.0",
       "gulp-babel": "~8.0",
@@ -63,7 +64,7 @@
       "gulp-rename": "~2.0",
       "gulp-replace": "~1.1",
       "gulp-size": "~4.0",
-      "gulp-w3c-html-validator": "~3.2",
+      "gulp-w3c-html-validator": "~5.0",
       "jshint": "~2.13",
       "merge-stream": "~2.0",
       "postcss": "~8.3",