diff --git a/code/__DEFINES/__game.dm b/code/__DEFINES/__game.dm
index f84b3d316d3c..d1cc112e23e4 100644
--- a/code/__DEFINES/__game.dm
+++ b/code/__DEFINES/__game.dm
@@ -556,3 +556,6 @@
 #define PERF_TOGGLE_SHUTTLES (1<<3)
 /// Disables loading Techwebs and additional Z-Levels
 #define PERF_TOGGLE_TECHWEBS (1<<4)
+
+/// Maptext styles
+#define MAP_STYLESHEET ".maptext { font-family: 'Small Fonts'; font-size: 7px; -dm-text-outline: 1px black; color: white; line-height: 1.1; } .center { text-align: center; } .langchat { font-family: 'Small Fonts'; font-size: 7px; -dm-text-outline: 1px black; } .langchat_small { font-size: 6px; } .langchat_yell { font-weight: bold; font-size: 10px; } .langchat_bolded { font-weight: bold; font-size: 8px; } .langchat_announce { font-weight: bold; font-size: 12px; } .langchat_bolditalicbig {font-weight: bold; font-size: 24px; font-style: italic; } .langchat_italic {font-style: italic; }"
diff --git a/code/controllers/subsystem/tgui.dm b/code/controllers/subsystem/tgui.dm
index a3ef03f3e397..7df4e7ce9c2b 100644
--- a/code/controllers/subsystem/tgui.dm
+++ b/code/controllers/subsystem/tgui.dm
@@ -32,6 +32,7 @@ SUBSYSTEM_DEF(tgui)
 	var/polyfill = file2text('tgui/public/tgui-polyfill.min.js')
 	polyfill = "<script>\n[polyfill]\n</script>"
 	basehtml = replacetextEx(basehtml, "<!-- tgui:inline-polyfill -->", polyfill)
+	basehtml = replacetext(basehtml, "tgui:stylesheet", MAP_STYLESHEET)
 
 /datum/controller/subsystem/tgui/Shutdown()
 	close_all_uis()
diff --git a/code/modules/client/client_procs.dm b/code/modules/client/client_procs.dm
index ae16314546d1..890edc5cd927 100644
--- a/code/modules/client/client_procs.dm
+++ b/code/modules/client/client_procs.dm
@@ -410,6 +410,7 @@ GLOBAL_LIST_INIT(whitelisted_client_procs, list(
 
 	connection_time = world.time
 	winset(src, null, "command=\".configure graphics-hwmode on\"")
+	winset(src, "map", "style=\"[MAP_STYLESHEET]\"")
 
 	send_assets()
 
diff --git a/interface/skin.dmf b/interface/skin.dmf
index 9b8a870e68e8..cab4ecebe835 100644
--- a/interface/skin.dmf
+++ b/interface/skin.dmf
@@ -223,7 +223,6 @@ window "mapwindow"
 		font-size = 7
 		is-default = true
 		saved-params = "zoom;letterbox;zoom-mode"
-		style = ".maptext { font-family: 'Small Fonts'; font-size: 7px; -dm-text-outline: 1px black; color: white; line-height: 1.1; } .center { text-align: center; } .langchat { font-family: 'Small Fonts'; font-size: 7px; -dm-text-outline: 1px black; } .langchat_small { font-size: 6px; } .langchat_yell { font-weight: bold; font-size: 10px; } .langchat_bolded { font-weight: bold; font-size: 8px; } .langchat_announce { font-weight: bold; font-size: 12px; } .langchat_bolditalicbig {font-weight: bold; font-size: 24px; font-style: italic; } .langchat_italic {font-style: italic; }"
 	elem "status_bar"
 		type = LABEL
 		pos = 0,464
diff --git a/tgui/global.d.ts b/tgui/global.d.ts
index 9cb8e37c2e8c..994632e499a3 100644
--- a/tgui/global.d.ts
+++ b/tgui/global.d.ts
@@ -158,6 +158,11 @@ type ByondType = {
    * Loads a script into the document.
    */
   loadJs(url: string): void;
+
+  /**
+   * The ByondCSS stylesheet to load into ByondUI components
+   */
+  styleSheet: string;
 };
 
 /**
diff --git a/tgui/packages/tgui/components/ByondUi.jsx b/tgui/packages/tgui/components/ByondUi.jsx
index c119879dd2a7..41304745509b 100644
--- a/tgui/packages/tgui/components/ByondUi.jsx
+++ b/tgui/packages/tgui/components/ByondUi.jsx
@@ -28,7 +28,8 @@ const createByondUiElement = (elementId) => {
     render: (params) => {
       logger.log(`rendering '${id}'`);
       byondUiStack[index] = id;
-      Byond.winset(id, params);
+
+      Byond.winset(id, { ...params, style: Byond.styleSheet });
     },
     unmount: () => {
       logger.log(`unmounting '${id}'`);
diff --git a/tgui/public/tgui.html b/tgui/public/tgui.html
index 807abca247f7..9db3acec2ebe 100644
--- a/tgui/public/tgui.html
+++ b/tgui/public/tgui.html
@@ -40,6 +40,8 @@
   // Expose inlined metadata
   Byond.windowId = parseMetaTag('tgui:windowId');
 
+  Byond.styleSheet = "tgui:stylesheet"
+
   // Backwards compatibility
   window.__windowId__ = Byond.windowId;