diff --git a/internal/assets/templates/page.html b/internal/assets/templates/page.html
index d2cee76..18d8b85 100644
--- a/internal/assets/templates/page.html
+++ b/internal/assets/templates/page.html
@@ -44,7 +44,7 @@
         <div class="mobile-navigation-icons">
             <a class="mobile-navigation-label" href="#top">↑</a>
             {{ range $i, $column := .Page.Columns }}
-            <label class="mobile-navigation-label"><input type="radio" class="mobile-navigation-input" name="column" value="{{ $i }}" autocomplete="off"{{ if eq "full" $column.Size }} checked{{ end }}><div class="mobile-navigation-pill"></div></label>
+            <label class="mobile-navigation-label"><input type="radio" class="mobile-navigation-input" name="column" value="{{ $i }}" autocomplete="off"{{ if eq $i $.Page.PrimaryColumnIndex }} checked{{ end }}><div class="mobile-navigation-pill"></div></label>
             {{ end }}
             <label class="mobile-navigation-label"><input type="checkbox" class="mobile-navigation-page-links-input" autocomplete="on"><div class="hamburger-icon"></div></label>
         </div>
diff --git a/internal/glance/glance.go b/internal/glance/glance.go
index f47c66a..2fd1ef9 100644
--- a/internal/glance/glance.go
+++ b/internal/glance/glance.go
@@ -75,6 +75,7 @@ type Page struct {
 	HideDesktopNavigation bool     `yaml:"hide-desktop-navigation"`
 	CenterVertically      bool     `yaml:"center-vertically"`
 	Columns               []Column `yaml:"columns"`
+	PrimaryColumnIndex    int8     `yaml:"-"`
 	mu                    sync.Mutex
 }
 
@@ -140,15 +141,24 @@ func NewApplication(config *Config) (*Application, error) {
 	}
 
 	for p := range config.Pages {
-		if config.Pages[p].Slug == "" {
-			config.Pages[p].Slug = titleToSlug(config.Pages[p].Title)
+		page := &config.Pages[p]
+		page.PrimaryColumnIndex = -1
+
+		if page.Slug == "" {
+			page.Slug = titleToSlug(page.Title)
 		}
 
-		app.slugToPage[config.Pages[p].Slug] = &config.Pages[p]
+		app.slugToPage[page.Slug] = page
 
-		for c := range config.Pages[p].Columns {
-			for w := range config.Pages[p].Columns[c].Widgets {
-				widget := config.Pages[p].Columns[c].Widgets[w]
+		for c := range page.Columns {
+			column := &page.Columns[c]
+
+			if page.PrimaryColumnIndex == -1 && column.Size == "full" {
+				page.PrimaryColumnIndex = int8(c)
+			}
+
+			for w := range column.Widgets {
+				widget := column.Widgets[w]
 				app.widgetByID[widget.GetID()] = widget
 
 				widget.SetProviders(providers)