fix: An issue where rc-tooltip CSS declarations were incorrectly orde…

…red on build

- rc-tooltip: https://www.npmjs.com/package/rc-tooltip
- The issue was that two CSS declarations (.rc-tooltip & .rc-tooltip-hidden) appear with one order in development (.rc-tooltip then .rc-tooltip-hidden) and the reverse order in a build (.rc-tooltip-hidden then .rc-tooltip).
- See facebook/docusaurus#3678
- This patch fixes the issue by ensuring that the .rc-tooltip-hidden class takes precedence over the .rc-tooltip class.

docs/package.json

@@ -6,7 +6,8 @@
     "start": "docusaurus start -p 3001",
     "build": "docusaurus build",
     "swizzle": "docusaurus swizzle",
-    "deploy": "docusaurus deploy"
+    "deploy": "docusaurus deploy",
+    "serve": "docusaurus serve -p 3001"
   },
   "dependencies": {
     "@docusaurus/core": "2.0.0-beta.9",

docs/src/css/custom.css

@@ -121,4 +121,8 @@ html[data-theme="dark"] .rc-tooltip {
       color: var(--ifm-font-color-base);
       border: solid 1px;
       border-color: var(--ifm-tooltip-border-color);
+  }
+
+  .rc-tooltip-hidden {
+      display: none !important;
   }