diff --git a/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/base/BaseWidget.java b/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/base/BaseWidget.java
index d8db1105..e7cee78f 100644
--- a/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/base/BaseWidget.java
+++ b/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/base/BaseWidget.java
@@ -5,8 +5,8 @@ import com.bartlomiejpluta.base.api.game.input.KeyEvent;
 public abstract class BaseWidget implements Widget {
    protected Widget parent;
 
-   protected SizeMode widthMode = SizeMode.NORMAL;
-   protected SizeMode heightMode = SizeMode.NORMAL;
+   protected SizeMode widthMode = SizeMode.AUTO;
+   protected SizeMode heightMode = SizeMode.AUTO;
 
    protected float x;
    protected float y;
@@ -30,26 +30,26 @@ public abstract class BaseWidget implements Widget {
 
    @Override
    public float getWidth() {
-      return widthMode == SizeMode.MATCH_PARENT
-            ? (parent != null ? parent.getWidth() - parent.getPaddingLeft() - parent.getPaddingRight() - marginLeft - marginRight : 0)
+      return widthMode == SizeMode.RELATIVE
+            ? (parent != null ? width * parent.getWidth() - parent.getPaddingLeft() - parent.getPaddingRight() - marginLeft - marginRight : 0)
             : getActualWidth();
    }
 
    @Override
    public float getActualWidth() {
-      return paddingLeft + (widthMode == SizeMode.NORMAL ? width : getContentWidth()) + paddingRight;
+      return paddingLeft + (widthMode == SizeMode.ABSOLUTE ? width : getContentWidth()) + paddingRight;
    }
 
    @Override
    public float getHeight() {
-      return heightMode == SizeMode.MATCH_PARENT
-            ? (parent != null ? parent.getHeight() - parent.getPaddingTop() - parent.getPaddingBottom() - marginTop - marginBottom : 0)
+      return heightMode == SizeMode.RELATIVE
+            ? (parent != null ? height * parent.getHeight() - parent.getPaddingTop() - parent.getPaddingBottom() - marginTop - marginBottom : 0)
             : getActualHeight();
    }
 
    @Override
    public float getActualHeight() {
-      return paddingTop + (heightMode == SizeMode.NORMAL ? height : getContentHeight()) + paddingBottom;
+      return paddingTop + (heightMode == SizeMode.ABSOLUTE ? height : getContentHeight()) + paddingBottom;
    }
 
    @Override
diff --git a/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/base/SizeMode.java b/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/base/SizeMode.java
index f283c45e..9dbdced4 100644
--- a/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/base/SizeMode.java
+++ b/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/base/SizeMode.java
@@ -1,7 +1,7 @@
 package com.bartlomiejpluta.base.api.game.gui.base;
 
 public enum SizeMode {
-   NORMAL,
-   MATCH_PARENT,
-   WRAP_CONTENT
+   AUTO,
+   ABSOLUTE,
+   RELATIVE
 }
diff --git a/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/window/BaseWindow.java b/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/window/BaseWindow.java
index c2594751..a12774d8 100644
--- a/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/window/BaseWindow.java
+++ b/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/window/BaseWindow.java
@@ -14,7 +14,7 @@ public abstract class BaseWindow extends BaseWidget implements Window {
    protected GUI gui;
    protected WindowManager manager;
    protected Component content;
-   protected WindowPosition windowPosition;
+   protected WindowPosition windowPosition = WindowPosition.CENTER;
 
    protected BaseWindow(Context context, GUI gui) {
       this.context = context;
diff --git a/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/window/WindowManager.java b/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/window/WindowManager.java
index 2b6455cd..5cf0795f 100644
--- a/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/window/WindowManager.java
+++ b/api/src/main/java/com/bartlomiejpluta/base/api/game/gui/window/WindowManager.java
@@ -21,7 +21,8 @@ public final class WindowManager extends BaseWidget {
    }
 
    public WindowManager(DisplayMode displayMode) {
-      super.setSizeMode(SizeMode.MATCH_PARENT, SizeMode.MATCH_PARENT);
+      super.setSizeMode(SizeMode.RELATIVE, SizeMode.RELATIVE);
+      super.setSize(1f, 1f);
       this.displayMode = displayMode;
    }
 
diff --git a/engine/src/main/java/com/bartlomiejpluta/base/engine/gui/widget/ScreenWidget.java b/engine/src/main/java/com/bartlomiejpluta/base/engine/gui/widget/ScreenWidget.java
index ee8d3057..345128a3 100644
--- a/engine/src/main/java/com/bartlomiejpluta/base/engine/gui/widget/ScreenWidget.java
+++ b/engine/src/main/java/com/bartlomiejpluta/base/engine/gui/widget/ScreenWidget.java
@@ -89,7 +89,7 @@ public class ScreenWidget implements Widget {
 
    @Override
    public SizeMode getWidthMode() {
-      return SizeMode.MATCH_PARENT;
+      return SizeMode.RELATIVE;
    }
 
    @Override
@@ -99,7 +99,7 @@ public class ScreenWidget implements Widget {
 
    @Override
    public SizeMode getHeightMode() {
-      return SizeMode.MATCH_PARENT;
+      return SizeMode.RELATIVE;
    }
 
    @Override