Improve Linux options page styling

ext/src/ui/options/index.tsx

@@ -21,10 +21,48 @@ const _ = browser.i18n.getMessage;
 // macOS styles
 browser.runtime.getPlatformInfo()
     .then(platformInfo => {
-        if (platformInfo.os === "mac") {
-            const link = document.createElement("link");
-            link.rel = "stylesheet";
-            link.href = "styles/mac.css";
+        const link = document.createElement("link");
+        link.rel = "stylesheet";
+
+        switch (platformInfo.os) {
+            case "mac": {
+                link.href = "styles/mac.css";
+                break;
+            }
+
+            // Fix issue with input[type="number"] height
+            case "linux": {
+                link.href = "styles/linux.css";
+
+                const input = document.createElement("input");
+                const inputWrapper = document.createElement("div");
+
+                inputWrapper.append(input)
+                document.documentElement.append(inputWrapper);
+
+                input.type = "text";
+                const textInputHeight = window.getComputedStyle(input).height;
+                input.type = "number";
+                const numberInputHeight = window.getComputedStyle(input).height;
+
+                inputWrapper.remove();
+
+                if (numberInputHeight !== textInputHeight) {
+                    const style = document.createElement("style");
+                    style.textContent = `
+                        input[type="number"] {
+                            height: ${textInputHeight};
+                        }
+                    `;
+
+                    document.body.append(style)
+                }
+
+                break;
+            }
+        }
+
+        if (link.href) {
             document.head.appendChild(link);
         }
     });

ext/src/ui/options/styles/index.css

@@ -7,8 +7,8 @@
     box-shadow: 0 0 1.5px 1px red;
 }
 
-body {
-    margin: 20px 10px;
+#root {
+    padding: 20px 10px;
 }
 
 #form {

ext/src/ui/options/styles/linux.css

@@ -0,0 +1,15 @@
+:root {
+    --border-color: graytext;
+    --secondary-color: graytext;
+}
+
+body {
+    padding: 20px 0;
+}
+
+#root {
+    background-color: -moz-dialog;
+    border-radius: 5px;
+    color: -moz-dialogtext;
+    overflow: hidden;
+}