Fixed after review

README.md

@@ -132,14 +132,14 @@ websearch:
   # e.g. `/home/me/.projektor/google.png`
   icon: web-browser
 ui:
-  # use as a string. In a near future it will be proportinal to screen size (%)
+  # These values must be quoted so they would be parsed as strings. This is required for future support of sizes proportional to screen size.
   width: "600"
   height: "300"
 ```
 
 Projektor styles should be placed at `~/.projektor/styles.css`.
 
-Here's is de default style:
+Here is the default style:
 
 ```css
 GtkEntry {

config.go

@@ -31,8 +31,9 @@ type ProjektorConfig struct {
 		Icon   string
 	}
 	UI struct {
-		Width  string
-		Height string
+		Position string
+		Width    string
+		Height   string
 	}
 }
 
@@ -62,6 +63,7 @@ func DefaultConfig() *ProjektorConfig {
 	c.WebSearch.Engine = "https://google.com/search?q=%s"
 	c.WebSearch.Icon = "web-browser"
 
+	c.UI.Position = "center"
 	c.UI.Width = "400"
 	c.UI.Height = "480"