diff --git a/packages/drawnix/src/components/color-picker.tsx b/packages/drawnix/src/components/color-picker.tsx
index e6791c3b..474da7e4 100644
--- a/packages/drawnix/src/components/color-picker.tsx
+++ b/packages/drawnix/src/components/color-picker.tsx
@@ -38,38 +38,40 @@ export const ColorPicker = React.forwardRef((props: ColorPickerProps, ref) => {
   );
   return (
     <>
-      {/* <SizeSlider
-        step={4}
-        defaultValue={100}
-        onChange={(value) => {}}
-      ></SizeSlider> */}
-      <Stack.Col gap={2}>
-        {ROWS_CLASSIC_COLORS.map((colors, index) => (
-          <Stack.Row key={index} gap={2}>
-            {colors.map((color) => {
-              return (
-                <button
-                  key={color.value}
-                  className={`color-select-item ${
-                    selectedColor === color.value ? 'active' : ''
-                  } ${color.value === 'transparent' ? 'transparent' : ''}`}
-                  style={{
-                    backgroundColor: color.value,
-                    color: color.value === '#000000' ? '#FFFFFF' : '#000000',
-                  }}
-                  onClick={() => {
-                    setSelectedColor(color.value);
-                    onSelect(color.value);
-                  }}
-                  title={color.name}
-                >
-                  {color.value === 'transparent' && TransparentIcon}
-                  {selectedColor === color.value && Check}
-                </button>
-              );
-            })}
-          </Stack.Row>
-        ))}
+      <Stack.Col gap={3}>
+        <SizeSlider
+          step={5}
+          defaultValue={100}
+          onChange={(value) => {}}
+        ></SizeSlider>
+        <Stack.Col gap={2}>
+          {ROWS_CLASSIC_COLORS.map((colors, index) => (
+            <Stack.Row key={index} gap={2}>
+              {colors.map((color) => {
+                return (
+                  <button
+                    key={color.value}
+                    className={`color-select-item ${
+                      selectedColor === color.value ? 'active' : ''
+                    } ${color.value === 'transparent' ? 'transparent' : ''}`}
+                    style={{
+                      backgroundColor: color.value,
+                      color: color.value === '#000000' ? '#FFFFFF' : '#000000',
+                    }}
+                    onClick={() => {
+                      setSelectedColor(color.value);
+                      onSelect(color.value);
+                    }}
+                    title={color.name}
+                  >
+                    {color.value === 'transparent' && TransparentIcon}
+                    {selectedColor === color.value && Check}
+                  </button>
+                );
+              })}
+            </Stack.Row>
+          ))}
+        </Stack.Col>
       </Stack.Col>
     </>
   );
diff --git a/packages/drawnix/src/components/size-slider.scss b/packages/drawnix/src/components/size-slider.scss
index e5180f61..e6851d36 100644
--- a/packages/drawnix/src/components/size-slider.scss
+++ b/packages/drawnix/src/components/size-slider.scss
@@ -8,7 +8,6 @@
         background-color: var(--color-gray-20);
         border-radius: 2px;
         cursor: pointer;
-        margin: 0 8px;
     }
     .slider-range {
         position: absolute;
diff --git a/packages/drawnix/src/components/size-slider.tsx b/packages/drawnix/src/components/size-slider.tsx
index 3e914831..e2105c77 100644
--- a/packages/drawnix/src/components/size-slider.tsx
+++ b/packages/drawnix/src/components/size-slider.tsx
@@ -1,5 +1,5 @@
-import React, { useState, useRef, useCallback } from 'react';
-
+import React, { useState, useRef, useCallback, useEffect } from 'react';
+import { toFixed } from '@plait/core';
 import './size-slider.scss';
 
 interface SliderProps {
@@ -13,19 +13,35 @@ interface SliderProps {
 export const SizeSlider: React.FC<SliderProps> = ({
   min = 0,
   max = 100,
-  step = 2,
+  step = 1,
   defaultValue = 100,
   onChange,
 }) => {
   const [value, setValue] = useState(defaultValue);
+  const [thumbPercentage, setThumbPercentage] = useState(defaultValue);
   const sliderRef = useRef<HTMLDivElement>(null);
+  const thumbRef = useRef<HTMLDivElement>(null);
+  useEffect(() => {
+    if (sliderRef.current && thumbRef.current) {
+      const sliderRect = sliderRef.current.getBoundingClientRect();
+      const thumbRect = thumbRef.current.getBoundingClientRect();
+      setThumbPercentage(
+        toFixed((thumbRect.width / 2 / sliderRect.width) * 100)
+      );
+    }
+  }, [thumbRef.current, sliderRef.current]);
 
   const handleSliderChange = useCallback(
     (event: React.MouseEvent<HTMLDivElement> | MouseEvent) => {
-      if (sliderRef.current) {
-        const rect = sliderRef.current.getBoundingClientRect();
-        const x = event.clientX - rect.left;
-        const percentage = Math.min(Math.max(x / rect.width, 0), 1);
+      if (sliderRef.current && thumbRef.current) {
+        const sliderRect = sliderRef.current.getBoundingClientRect();
+        const x = event.clientX - sliderRect.left;
+        let percentage = Math.min(Math.max(x / sliderRect.width, 0), 1);
+        if (percentage >= (100 - thumbPercentage) / 100) {
+          percentage = 1;
+        } else if (percentage <= thumbPercentage / 100) {
+          percentage = 0;
+        }
         const newValue =
           Math.round((percentage * (max - min)) / step) * step + min;
         setValue(newValue);
@@ -35,18 +51,24 @@ export const SizeSlider: React.FC<SliderProps> = ({
     [min, max, step, onChange]
   );
 
-  const handleMouseDown = useCallback(() => {
+  const handlePointerDown = useCallback(() => {
     const handleMouseMove = (e: MouseEvent) => handleSliderChange(e);
     const handleMouseUp = () => {
-      document.removeEventListener('mousemove', handleMouseMove);
-      document.removeEventListener('mouseup', handleMouseUp);
+      document.removeEventListener('pointermove', handleMouseMove);
+      document.removeEventListener('pointerup', handleMouseUp);
     };
 
-    document.addEventListener('mousemove', handleMouseMove);
-    document.addEventListener('mouseup', handleMouseUp);
+    document.addEventListener('pointermove', handleMouseMove);
+    document.addEventListener('pointerup', handleMouseUp);
   }, [handleSliderChange]);
 
-  const percentage = ((value - min) / (max - min)) * 100;
+  let percentage = ((value - min) / (max - min)) * 100;
+  if (percentage >= 100 - thumbPercentage) {
+    percentage = 100 - thumbPercentage;
+  }
+  if (percentage <= thumbPercentage) {
+    percentage = thumbPercentage;
+  }
 
   return (
     <div className="slider-container">
@@ -54,7 +76,10 @@ export const SizeSlider: React.FC<SliderProps> = ({
         ref={sliderRef}
         className="slider-track"
         onClick={handleSliderChange}
-        onMouseDown={handleMouseDown}
+        onPointerDown={(event) => {
+          event.preventDefault();
+          handlePointerDown();
+        }}
       >
         <div
           className="slider-range"
@@ -63,6 +88,7 @@ export const SizeSlider: React.FC<SliderProps> = ({
           }}
         />
         <div
+          ref={thumbRef}
           className="slider-thumb"
           style={{
             left: `${percentage}%`,