diff --git a/R/comparison_editor.R b/R/comparison_editor.R
index 8f12d95..b576847 100644
--- a/R/comparison_editor.R
+++ b/R/comparison_editor.R
@@ -9,15 +9,14 @@ comparison_editor_ui <- function(id, options) {
       NS(id, "comparison_genes"),
       "Comparison genes",
       choices = c(
-        "None",
+        "Your genes",
         "Random genes",
-        names(options$gene_sets),
-        "Customize"
+        names(options$gene_sets)
       )
     ),
     conditionalPanel(
       condition = sprintf(
-        "input['%s'] == 'Customize'",
+        "input['%s'] == 'Your genes'",
         NS(id, "comparison_genes")
       ),
       gene_selector_ui(NS(id, "custom_genes"))
@@ -39,15 +38,13 @@ comparison_editor_server <- function(id, preset, options) {
     custom_gene_ids <- gene_selector_server("custom_genes")
 
     reactive({
-      if (input$comparison_genes == "None") {
-        NULL
-      } else if (input$comparison_genes == "Random genes") {
+      if (input$comparison_genes == "Random genes") {
         preset <- preset()
         gene_pool <- preset$gene_ids
         reference_gene_ids <- preset$reference_gene_ids
         gene_pool <- gene_pool[!gene_pool %chin% reference_gene_ids]
         gene_pool[sample(length(gene_pool), length(reference_gene_ids))]
-      } else if (input$comparison_genes == "Customize") {
+      } else if (input$comparison_genes == "Your genes") {
         custom_gene_ids()
       } else {
         options$gene_sets[[input$comparison_genes]]
diff --git a/R/gene_selector.R b/R/gene_selector.R
index def6078..b9ffe94 100644
--- a/R/gene_selector.R
+++ b/R/gene_selector.R
@@ -29,7 +29,7 @@ gene_selector_ui <- function(id, default_gene_ids = NULL) {
         "list",
         shinyWidgets::virtualSelectInput(
           NS(id, "selected_genes"),
-          label = "Select genes",
+          label = NULL,
           choices = gene_choices,
           multiple = TRUE,
           search = TRUE,
@@ -40,7 +40,7 @@ gene_selector_ui <- function(id, default_gene_ids = NULL) {
         "hgnc",
         textAreaInput(
           NS(id, "hgnc_names_raw"),
-          "Enter HGNC symbols",
+          label = NULL,
           value = paste(
             geposan::genes[
               id %chin% default_gene_ids & name != "",
@@ -55,7 +55,7 @@ gene_selector_ui <- function(id, default_gene_ids = NULL) {
         "ensembl",
         textAreaInput(
           NS(id, "gene_ids_raw"),
-          "Enter Ensembl gene IDs",
+          label = NULL,
           value = paste(default_gene_ids, collapse = "\n"),
           height = "250px"
         )
diff --git a/R/style.R b/R/style.R
new file mode 100644
index 0000000..5eabdeb
--- /dev/null
+++ b/R/style.R
@@ -0,0 +1,14 @@
+#' Custom CSS to tweak the rendering.
+#' @noRd
+custom_css <- function() {
+  tags$head(
+    tags$style(HTML(
+      ".nav-hidden { height: 0 }",
+      ".flow-layout > div {",
+      "display: inline-block;",
+      "vertical-align: top;",
+      "margin-right: 12px;",
+      "}"
+    ))
+  )
+}
diff --git a/R/ui.R b/R/ui.R
index 49e903e..becbe67 100644
--- a/R/ui.R
+++ b/R/ui.R
@@ -5,6 +5,7 @@
 #' @noRd
 ui <- function(options) {
   div(
+    custom_css(),
     shinyjs::useShinyjs(),
     rclipboard::rclipboardSetup(),
     navbarPage(