diff --git a/src/window.vala b/src/window.vala
index 61542f5..e61ff44 100644
--- a/src/window.vala
+++ b/src/window.vala
@@ -1,393 +1,394 @@
 /*
     Copyright © 2018 Write.as
 
     This file is part of the Write.as GTK desktop app.
 
     This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
     the Free Software Foundation, either version 3 of the License, or
     (at your option) any later version.
 
     This program is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
     along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 public class WriteAs.MainWindow : Gtk.ApplicationWindow {
     private Gtk.TextView canvas;
     private Gtk.HeaderBar header;
     private Granite.ModeSwitch darkmode_switch;
 
     private static string data_dir = ".writeas";
     private static string version = "1.0.1";
 
     private int font_size = 16;
     private bool dark_mode = false;
     private string font = "Lora, 'Palatino Linotype',"
             + "'Book Antiqua', 'New York', 'DejaVu serif', serif";
     private string fontstyle = "serif";
     private bool text_changed = false;
 
     private bool is_initializing = true;
 
     construct {
         header = new Gtk.HeaderBar();
         header.title = "Write.as";
         construct_toolbar();
         build_keyboard_shortcuts();
 
         var scrolled = new Gtk.ScrolledWindow(null, null);
         canvas = new Gtk.SourceView();
         canvas.wrap_mode = Gtk.WrapMode.WORD_CHAR;
         scrolled.add(canvas);
         add(scrolled);
 
         size_allocate.connect((_) => {adjust_text_style();});
         canvas.event_after.connect((evt) => {
             // TODO This word count algorithm may be quite naive
             //      and could do improvement.
             var word_count = canvas.buffer.text.split(" ").length;
             header.subtitle = ngettext("%i word","%i words",word_count).printf(word_count);
 
             text_changed = true;
         });
         Timeout.add_full(Priority.DEFAULT_IDLE, 100/*ms*/, () => {
             if (!text_changed) return Source.CONTINUE;
 
             var text = canvas.buffer.text;
             // This happens sometimes for some reason, but it's difficult to debug.
             if (text == "") return Source.CONTINUE;
 
             try {
             draft_file().replace_contents(text.data, null, false,
                 FileCreateFlags.PRIVATE | FileCreateFlags.REPLACE_DESTINATION,
                 null);
             text_changed = false;
             } catch (Error err) {/* We'll try again anyways. */}
 
             return Source.CONTINUE;
         });
 
         adjust_text_style(false);
 
     }
 
     public MainWindow(Gtk.Application app) {
         stdout.printf("writeas-gtk v%s\n", version);
 
         set_application(app);
         icon_name = "com.github.writeas.writeas-gtk";
         init_folder();
         try {
             open_file(draft_file());
         } catch (Error err) {}
         restore_styles();
 
         set_default_size(800, 600);
         is_initializing = false;
     }
 
     private static void init_folder() {
         var home = File.new_for_path(get_data_dir());
         try {
             home.make_directory();
         } catch (Error e) {
             stderr.printf("Create data dir: %s\n", e.message);
         }
     }
 
     private static string get_data_dir() {
         return Environment.get_home_dir() + "/" + data_dir;
     }
 
     private static File draft_file() {
         var home = File.new_for_path(get_data_dir());
         return home.get_child("draft.txt");
     }
 
     private static bool supports_dark_theme() {
         var theme = Gtk.Settings.get_default().gtk_theme_name;
 
         foreach (var datapath in Environment.get_system_data_dirs()) {
             var path = File.new_for_path(Path.build_filename(datapath, "themes", theme));
             if (path.get_child("gtk-dark.css").query_exists()) return true;
 
             try {
                 var enumerator = path.enumerate_children("standard::*", 0);
                 FileInfo info = null;
                 while ((info = enumerator.next_file()) != null) {
                     var fullpath = path.get_child(info.get_name()).get_child("gtk-dark.css");
                     if (fullpath.query_exists()) return true;
                 }
             } catch (Error err) {/* Might be missing something, but no biggy. */}
         }
 
         return false;
     }
 
     private void construct_toolbar() {
         header.show_close_button = true;
         set_titlebar(header);
 
         var publish_button = new Gtk.Button.from_icon_name("document-send",
                 Gtk.IconSize.LARGE_TOOLBAR);
         publish_button.tooltip_text = _("Publish to Write.as on the web");
         publish_button.clicked.connect(() => {
             canvas.buffer.text += "\n\n" + publish();
 
             canvas.grab_focus();
         });
         header.pack_end(publish_button);
 
         darkmode_switch = new Granite.ModeSwitch.from_icon_name ("display-brightness-symbolic", "weather-clear-night-symbolic");
         darkmode_switch.primary_icon_tooltip_text = ("Light theme");
         darkmode_switch.secondary_icon_tooltip_text = ("Dark theme");
         darkmode_switch.valign = Gtk.Align.CENTER;
         var settings = Gtk.Settings.get_default();
         darkmode_switch.notify["active"].connect(() => {
             settings.gtk_application_prefer_dark_theme = darkmode_switch.active;
             dark_mode = darkmode_switch.active;
             if (!is_initializing) theme_save();
 
             canvas.grab_focus();
         });
         if (supports_dark_theme()) header.pack_end(darkmode_switch);
 
         var fonts = new Gtk.MenuButton();
         fonts.tooltip_text = _("Change document font");
         fonts.image = new Gtk.Image.from_icon_name("font-x-generic", Gtk.IconSize.LARGE_TOOLBAR);
         fonts.popup = new Gtk.Menu();
         header.pack_start(fonts);
 
         build_fontoption(fonts.popup, _("Serif"), "serif", font);
         build_fontoption(fonts.popup, _("Sans-serif"), "sans",
                 "'Open Sans', 'Segoe UI', Tahoma, Arial, sans-serif");
         build_fontoption(fonts.popup, _("Monospace"), "wrap", "Hack, consolas," +
                 "Menlo-Regular, Menlo, Monaco, 'ubuntu mono', monospace");
         fonts.popup.show_all();
     }
 
     private unowned SList<Gtk.RadioMenuItem>? font_options = null;
     private void build_fontoption(Gtk.Menu menu,
             string label, string fontstyle, string families) {
         var option = new Gtk.RadioMenuItem.with_label(font_options, label);
         font_options = option.get_group();
         option.activate.connect(() => {
             this.font = families;
             this.fontstyle = fontstyle;
             adjust_text_style(!is_initializing);
 
             canvas.grab_focus();
         });
 
         var styles = option.get_style_context();
         var provider = new Gtk.CssProvider();
         try {
             provider.load_from_data("* {font-family: %s;}".printf(families));
             styles.add_provider(provider, Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION);
         } catch (Error e) {
             warning(e.message);
         }
 
         menu.add(option);
     }
 
     public override void grab_focus() {
         canvas.grab_focus();
     }
 
     private KeyFile theme = new KeyFile();
     private void restore_styles() {
         try {
             loaded_theme = true;
 
             theme.load_from_file(get_data_dir() + "/prefs.ini", KeyFileFlags.NONE);
 
             dark_mode = theme.get_boolean("Theme", "darkmode");
             darkmode_switch.active = dark_mode;
             Gtk.Settings.get_default().gtk_application_prefer_dark_theme = dark_mode;
             font_size = theme.get_integer("Theme", "fontsize");
             font = theme.get_string("Post", "font");
             fontstyle = theme.get_string("Post", "fontstyle");
 
             adjust_text_style(false);
         } catch (Error err) {/* No biggy... */}
     }
 
     private Gtk.CssProvider cur_styles = null;
     // So the theme isn't read before it's saved.
     private bool loaded_theme = false;
     private void adjust_text_style(bool save_theme = true) {
         try {
             if (cur_styles != null)
                 Gtk.StyleContext.remove_provider_for_screen(Gdk.Screen.get_default(), cur_styles);
 
             var padding = canvas.get_allocated_width()*0.10;
-            var css = ("textview {font-family: %s; font-size: %dpx; padding: 20px;" +
-                    " padding-left: %ipx; padding-right: %ipx;" +
-                    " caret-color: #5ac4ee;}").printf(font, font_size,
-                        (int) padding, (int) padding);
+            var css = ("textview {font-family: %s; font-size: %dpx; padding: 20px 0;" +
+                    " caret-color: #5ac4ee;}").printf(font, font_size);
             cur_styles = new Gtk.CssProvider();
             cur_styles.load_from_data(css);
 
             Gtk.StyleContext.add_provider_for_screen(Gdk.Screen.get_default(),
                     cur_styles, Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION);
 
+            // TODO: set left-margin and right-margin on the sourceview to `padding`
+            canvas.left_margin = canvas.right_margin = (int) padding;
+
             if (save_theme) theme_save();
         } catch (Error e) {
             warning(e.message);
         }
     }
 
     private void theme_save() {
         if (!loaded_theme) return;
         theme.set_boolean("Theme", "darkmode", dark_mode);
         theme.set_integer("Theme", "fontsize", font_size);
         theme.set_string("Post", "font", font);
         theme.set_string("Post", "fontstyle", fontstyle);
 
         try {
             theme.save_to_file(get_data_dir() + "/prefs.ini");
         } catch (FileError err) {/* Oh well. */}
     }
 
     private string publish() {
         try {
             if (text_changed) {;
             draft_file().replace_contents(canvas.buffer.text.data, null, false,
                 FileCreateFlags.PRIVATE | FileCreateFlags.REPLACE_DESTINATION,
                 null);
             text_changed = false;
             }
 
             var cmd = "sh -c 'cat ~/" + data_dir + "/draft.txt | writeas --md --font %s --user-agent \"writeas-gtk v" + version + "\"'";
             cmd = cmd.printf(fontstyle);
             string stdout, stderr;
             int status;
             Process.spawn_command_line_sync(cmd,
                     out stdout, out stderr, out status);
 
             // Open it in the browser
             if (status == 0) {
                 var browser = AppInfo.get_default_for_uri_scheme("https");
                 var urls = new List<string>();
                 urls.append(stdout.strip());
                 browser.launch_uris(urls, null);
             }
 
             return stderr.strip();
         } catch (Error err) {
             return err.message;
         }
     }
     /* --- */
 
     private void build_keyboard_shortcuts() {
         /* These operations are not exposed to the UI as buttons,
             as most people are very familiar with them and they are not the
             focus of this app. */
         var accels = new Gtk.AccelGroup();
 
         // App operations
         accels.connect(Gdk.Key.W, Gdk.ModifierType.CONTROL_MASK,
                 Gtk.AccelFlags.VISIBLE | Gtk.AccelFlags.LOCKED,
                 (g,a,k,m) => quit());
         accels.connect(Gdk.Key.Q, Gdk.ModifierType.CONTROL_MASK,
                 Gtk.AccelFlags.VISIBLE | Gtk.AccelFlags.LOCKED,
                 (g,a,k,m) => quit());
 
         // File operations
         accels.connect(Gdk.Key.S, Gdk.ModifierType.CONTROL_MASK,
                 Gtk.AccelFlags.VISIBLE | Gtk.AccelFlags.LOCKED,
                 (g,a,k,m) => save_as());
         accels.connect(Gdk.Key.S,
                 Gdk.ModifierType.CONTROL_MASK | Gdk.ModifierType.SHIFT_MASK,
                 Gtk.AccelFlags.VISIBLE | Gtk.AccelFlags.LOCKED,
                 (g,a,k,m) => save_as());
 
         // Adjust text size
         accels.connect(Gdk.Key.minus, Gdk.ModifierType.CONTROL_MASK, Gtk.AccelFlags.VISIBLE | Gtk.AccelFlags.LOCKED, (g,a,k,m) => {
             if (font_size < 3) {
                 return false;
             }
             if (font_size <= 10) {
                 font_size -= 1;
             } else {
                 font_size -= 2;
             }
             adjust_text_style(true);
             return true;
         });
         accels.connect(Gdk.Key.equal, Gdk.ModifierType.CONTROL_MASK, Gtk.AccelFlags.VISIBLE | Gtk.AccelFlags.LOCKED, (g,a,k,m) => {
             if (font_size < 10) {
                 font_size += 1;
             } else {
                 font_size += 2;
             }
             adjust_text_style(true);
             return true;
         });
 
         // Toggle theme with Ctrl+T
         accels.connect(Gdk.Key.T, Gdk.ModifierType.CONTROL_MASK, Gtk.AccelFlags.VISIBLE | Gtk.AccelFlags.LOCKED, (g,a,k,m) => {
             darkmode_switch.active = !darkmode_switch.active;
             return true;
         });
 
         // Publish with Ctrl+Enter
         accels.connect(Gdk.Key.Return, Gdk.ModifierType.CONTROL_MASK, Gtk.AccelFlags.VISIBLE | Gtk.AccelFlags.LOCKED, (g,a,k,m) => {
             canvas.buffer.text += "\n\n" + publish();
             return true;
         });
 
         add_accel_group(accels);
     }
 
     private bool save_as() {
         try {
         var file = prompt_file(Gtk.FileChooserAction.SAVE, _("Save as"));
         file.replace_contents(canvas.buffer.text.data, null, false,
                 FileCreateFlags.PRIVATE | FileCreateFlags.REPLACE_DESTINATION,
                 null);
         } catch (Error e) {
             // It's fine...
         }
         return true;
     }
 
     private File prompt_file(Gtk.FileChooserAction mode, string action)
             throws UserCancellable {
         var file_chooser = new Gtk.FileChooserDialog(action, this, mode,
               _("Cancel"), Gtk.ResponseType.CANCEL,
               action, Gtk.ResponseType.ACCEPT);
 
         file_chooser.select_multiple = false;
         var filter = new Gtk.FileFilter();
         filter.add_mime_type("text/plain");
         file_chooser.set_filter(filter);
 
         var resp = file_chooser.run();
         file_chooser.close();
         if (resp == Gtk.ResponseType.ACCEPT) {
             return file_chooser.get_file();
         } else {
             throw new UserCancellable.USER_CANCELLED("FileChooserDialog");
         }
     }
 
     public void open_file(File file) throws Error {
         uint8[] text;
         file.load_contents(null, out text, null);
         canvas.buffer.text = (string) text;
     }
 
     private bool quit() {
         this.close();
         return true;
     }
 }
 
 errordomain WriteAs.UserCancellable {USER_CANCELLED}