diff --git a/R/style_xaringan.R b/R/style_xaringan.R
index 5859d870..e458ea70 100644
--- a/R/style_xaringan.R
+++ b/R/style_xaringan.R
@@ -344,7 +344,7 @@ style_xaringan <- function(
   force(code_font_family)
   force(code_font_url)
   force(code_font_family_fallback)
-  
+
   # the defaults are google fonts
   is_default <- function(type, suffix) {
     # check if font arg value is from xaringanthemer_font_default
@@ -362,7 +362,7 @@ style_xaringan <- function(
     r_set_font_is_google <- glue::glue("{var}_font_is_google <- {var_is_google}")
     eval(parse(text = r_set_font_is_google))
   }
-  
+
   # Make sure font names are wrapped in quotes if they have spaces
   f_args <- names(formals(sys.function()))
   for (var in f_args[grepl("font_family$", f_args)]) {
@@ -371,7 +371,7 @@ style_xaringan <- function(
       eval(parse(text = paste0(var, "<-quote_elements_w_spaces(", var, ")")))
     }
   }
-  
+
   # Warn if base_font_size isn't absolute
   css_abs_units <- c("cm", "mm", "Q", "in", "pc", "pt", "px")
   if (!grepl(paste(tolower(css_abs_units), collapse = "|"), tolower(base_font_size))) {
@@ -385,7 +385,7 @@ style_xaringan <- function(
       immediate. = TRUE
     )
   }
-  
+
   # If certain colors aren't in hexadecimal it may cause problems with theme_xaringan()
   # TODO: at some point I'd rather be able to process CSS colors or variables
   colors_used_by_theme_xaringan <- list(
@@ -399,18 +399,18 @@ style_xaringan <- function(
   )
   colors_used_by_theme_xaringan <- purrr::discard(colors_used_by_theme_xaringan, is.null)
   colors_are_hex <- purrr::map_lgl(colors_used_by_theme_xaringan, check_color_is_hex, throw = NULL)
-  
+
   if (any(!colors_are_hex)) {
     colors_better_as_hex <- names(colors_used_by_theme_xaringan)[!colors_are_hex]
     colors_better_as_hex <- paste(colors_better_as_hex, collapse = ", ")
     warning(
       glue::glue("Colors that will be used by `theme_xaringan()` need to be in ",
-                 "hexadecimal format: {colors_better_as_hex}"),
+        "hexadecimal format: {colors_better_as_hex}"),
       immediate. = TRUE,
       call. = FALSE
     )
   }
-  
+
   # Use font_..._google args to overwrite font args
   for (var in f_args[grepl("font_google$", f_args)]) {
     gf <- eval(parse(text = var))
@@ -433,10 +433,10 @@ style_xaringan <- function(
     }
     eval(parse(text = paste0(group, "_font_is_google <- 1")))
   }
-  
+
   extra_font_imports <- if (is.null(extra_fonts)) "" else list2fonts(extra_fonts)
   extra_font_imports <- paste(extra_font_imports, collapse = "\n")
-  
+
   # convert NA arguments to NULL
   for (var in f_args) {
     val <- eval(parse(text = var))
@@ -445,7 +445,7 @@ style_xaringan <- function(
     is_na <- length(val) == 0
     if (is_na) assign(var, NULL, envir = sys.frame(sys.nframe()))
   }
-  
+
   # prepare variables for template
   body_font_family <- paste(c(text_font_family, text_font_family_fallback, text_font_base), collapse = ", ")
   background_size_fallback <- if (is.null(background_position)) "cover" else "100%"
@@ -454,7 +454,7 @@ style_xaringan <- function(
     title_slide_background_image %??% "cover"
   )
   table_row_even_background_color <- table_row_even_background_color %||% background_color
-  
+
   # stash theme settings in package env
   lapply(f_args, function(n) assign(n, get(n), envir = xaringanthemer_env))
   for (font_is_google in paste0(c("text", "code", "header"), "_font_is_google")) {
@@ -464,9 +464,9 @@ style_xaringan <- function(
       envir = xaringanthemer_env
     )
   }
-  
+
   xaringanthemer_version <- utils::packageVersion("xaringanthemer")
-  
+
   # prepare header background object
   needs_leading_dot <- !grepl("^\\.", header_background_ignore_classes)
   header_background_ignore_classes[needs_leading_dot] <- paste0(
@@ -491,9 +491,9 @@ style_xaringan <- function(
     content_padding_top = header_background_content_padding_top,
     ignore = header_background_ignore_classes
   )
-  
+
   colors <- prepare_colors(colors)
-  
+
   tf <- system.file("resources", "template.css", package = "xaringanthemer")
   template <- readLines(tf, warn = FALSE)
   template <- paste(template, collapse = "\n")
diff --git a/man/figures/index-theme_xaringan_demo-1.png b/man/figures/index-theme_xaringan_demo-1.png
index a10f528c..30266e31 100644
Binary files a/man/figures/index-theme_xaringan_demo-1.png and b/man/figures/index-theme_xaringan_demo-1.png differ