diff --git a/packages/client/src/App.vue b/packages/client/src/App.vue
index 847dd434..6981e6d1 100644
--- a/packages/client/src/App.vue
+++ b/packages/client/src/App.vue
@@ -23,7 +23,7 @@ const sidebarExpanded = computed(() => clientState.value.expandSidebar)
 
 watchEffect(() => {
   const scale = devtoolsClientState.value.scale
-  document.body.style.fontSize = `${scale * 15}px`
+  document.documentElement.style.fontSize = `${scale * 15}px`
 })
 
 watch(connected, (v) => {
diff --git a/packages/client/src/pages/settings.vue b/packages/client/src/pages/settings.vue
index 4ad2db81..5f3c1626 100644
--- a/packages/client/src/pages/settings.vue
+++ b/packages/client/src/pages/settings.vue
@@ -166,12 +166,13 @@ const minimizePanelInteractiveLabel = computed(() => {
               Switch to Overlay Mode
             </VueButton>
           </div>
-          <!-- TODO: need rewrite client/(UI package) to rem based -->
-          <!-- <div mx--2 my1 h-1px border="b base" op75 />
+          <div mx--2 my1 h-1px border="b base" op75 />
           <p>UI Scale</p>
           <div>
-            <VueSelect v-model="scale" :options="scaleOptions.map(([label, value]) => ({ label, value }))" />
-          </div> -->
+            <VueSelect
+              v-model="scale" :options="scaleOptions.map(([label, value]) => ({ label, value }))" :button-props="{ outlined: true }"
+            />
+          </div>
           <div mx--2 my1 h-1px border="b base" op75 />
           <div class="flex items-center gap2 text-sm">
             <VueCheckbox v-model="expandSidebar" />
diff --git a/packages/ui/src/components/Button.vue b/packages/ui/src/components/Button.vue
index 1f90be0f..1f122df1 100644
--- a/packages/ui/src/components/Button.vue
+++ b/packages/ui/src/components/Button.vue
@@ -108,7 +108,7 @@ const variantClasses = computed(() => {
   <component
     :is="component" v-bind="$attrs"
     role="button" :aria-disabled="disabled"
-    class="$ui-base $ui-inline-fcc inline-flex cursor-pointer select-none gap5px py-0 no-underline $ui-transition"
+    class="$ui-base $ui-inline-fcc inline-flex cursor-pointer select-none gap1.25 py-0 no-underline $ui-transition"
     :class="[
       [styles.common[props.type]],
       {
@@ -119,14 +119,14 @@ const variantClasses = computed(() => {
       },
       [
         outlined ? 'b-1 $ui-border-base active:ring-3 shadow-sm' : 'border-none',
-        size === 'mini' ? 'px4px text-12px h22px' : 'px-14px text-14px h32px',
+        size === 'mini' ? 'px1 text-3 h5.5' : 'px3.5 text-3.5 h8',
         variantClasses,
       ],
     ]"
     @click.capture="handleClick"
   >
-    <LoadingIndicator v-if="loading" class="mt2px h-full w-12px" />
-    <slot v-else name="icon" class="h-full w-12px $ui-inline-fcc" />
+    <LoadingIndicator v-if="loading" class="mt0.5 h-full w3" />
+    <slot v-else name="icon" class="h-full w3 $ui-inline-fcc" />
     <div v-if="slots.default">
       <slot />
     </div>
diff --git a/packages/ui/src/components/Checkbox.vue b/packages/ui/src/components/Checkbox.vue
index 21764cee..75233182 100644
--- a/packages/ui/src/components/Checkbox.vue
+++ b/packages/ui/src/components/Checkbox.vue
@@ -17,7 +17,7 @@ const value = useVModel(props, 'modelValue', emit)
 
 <template>
   <div
-    class="relative $ui-base h20px w20px $ui-inline-fcc cursor-pointer border-2px rounded-5px transition-colors duration-200 ease-in-out"
+    class="relative $ui-base h5 w5 $ui-inline-fcc cursor-pointer border-0.125rem rounded-1.25 transition-colors duration-200 ease-in-out"
     :class="[
       value
         ? variant === 'normal'
@@ -31,7 +31,7 @@ const value = useVModel(props, 'modelValue', emit)
       :class="[
         value ? 'opacity-100' : 'opacity-0',
       ]"
-      class="h-60% w-35% transform-translate-y--1px transform-rotate-45 border-width-[0_2px_2px_0] border-white border-solid transition-opacity duration-200 ease-in-out"
+      class="h-60% w-35% transform-translate-y--0.25 transform-rotate-45 border-width-[0_0.125rem_0.125rem_0] border-white border-solid transition-opacity duration-200 ease-in-out"
     />
   </div>
 </template>
diff --git a/packages/ui/src/components/Confirm.vue b/packages/ui/src/components/Confirm.vue
index 768db1b3..476b1981 100644
--- a/packages/ui/src/components/Confirm.vue
+++ b/packages/ui/src/components/Confirm.vue
@@ -18,7 +18,7 @@ const props = withDefaults(defineProps<{
   cancelText: 'Cancel',
   confirmText: 'Confirm',
   width: '20%',
-  height: '150px',
+  height: '9rem',
   title: 'Warning',
   loading: false,
   autoClose: true,
@@ -50,7 +50,7 @@ function close(close = false) {
       {{ content }}
     </slot>
     <template #footer>
-      <div class="$ui-fec gap10px">
+      <div class="$ui-fec gap2.5">
         <VueButton
           @click="() => {
             emit('cancel')
diff --git a/packages/ui/src/components/Dialog.vue b/packages/ui/src/components/Dialog.vue
index bf1477b1..c550b804 100644
--- a/packages/ui/src/components/Dialog.vue
+++ b/packages/ui/src/components/Dialog.vue
@@ -19,8 +19,8 @@ const props = withDefaults(
     title: 'Dialog',
     modelValue: false,
     autoClose: true,
-    width: '500px',
-    height: '300px',
+    width: '32rem',
+    height: '18rem',
     closable: true,
     mountTo: 'body',
   },
@@ -58,21 +58,21 @@ onMounted(() => isMount.value = true)
 <template>
   <Teleport v-if="isMount || mountTo === 'body'" :to="mountTo">
     <Transition
-      enter-from-class="opacity-0 [&_.modal]:scale-95 [&_.content,&_.footer]:translate-y--10px [&_.content,&_.footer]:opacity-0"
+      enter-from-class="opacity-0 [&_.modal]:scale-95 [&_.content,&_.footer]:translate-y--2.5 [&_.content,&_.footer]:opacity-0"
       enter-to-class="opacity-100 [&_.modal]:scale-100"
       leave-from-class="opacity-100 [&_.modal]:scale-100"
       leave-to-class="opacity-0 [&_.modal]:scale-95"
     >
       <Overlay v-if="show" :dim="dim" :blur="blur">
         <div
-          class="modal relative grid grid-rows-[30px_1fr_40px] $ui-base max-h-[calc(100vh-100x)] max-w-[calc(100vw-100px)] min-h-100px min-w-200px gap-10px rounded-md bg-white px24px py18px color-gray-800 shadow-2xl transition-transform transition-duration-300 dark:bg-gray-900 dark:color-gray-200"
+          class="modal relative grid grid-rows-[1.875rem_1fr_2.5rem] $ui-base max-h-[calc(100vh-6.25rem)] max-w-[calc(100vw-6.25rem)] min-h-6.25rem min-w-12.5rem gap-2.5 rounded-md bg-white px6 py4.5 color-gray-800 shadow-2xl transition-transform transition-duration-300 dark:bg-gray-900 dark:color-gray-200"
           :style="{
             width: props.width,
             height: props.height,
           }"
         >
-          <div class="h-30px w-full $ui-fbc">
-            <div class="text-18px">
+          <div class="h7.5 w-full $ui-fbc">
+            <div class="text-4.5">
               <slot name="title">
                 {{ props.title }}
               </slot>
@@ -84,7 +84,7 @@ onMounted(() => isMount.value = true)
           <div class="content transition-all transition-duration-300">
             <slot />
           </div>
-          <div class="footer h32px w-full transition-all transition-duration-300 delay-250">
+          <div class="footer h8 w-full transition-all transition-duration-300 delay-250">
             <slot name="footer">
               <slot name="footer">
                 <div class="$ui-fcc">
diff --git a/packages/ui/src/components/Drawer.vue b/packages/ui/src/components/Drawer.vue
index a6d29d40..a6e800aa 100644
--- a/packages/ui/src/components/Drawer.vue
+++ b/packages/ui/src/components/Drawer.vue
@@ -85,7 +85,7 @@ onMounted(() => isMount.value = true)
             top: placement === 'bottom' ? 'auto' : `${height}px`,
             height: ['top', 'bottom'].includes(placement) ? 'auto' : `calc(100% - ${height}px)`,
           }"
-          class="drawer pointer-events-auto absolute min-w-100px of-auto $ui-border-base transition-transform transition-duration-300"
+          class="drawer pointer-events-auto absolute min-w-25 of-auto $ui-border-base transition-transform transition-duration-300"
           @click.stop
         >
           <div v-if="closable" class="i-carbon-close absolute right-1.5 top-1.5 $ui-z-max cursor-pointer p1 text-lg $ui-text" @click="show = false" />
diff --git a/packages/ui/src/components/FormField.vue b/packages/ui/src/components/FormField.vue
index 7e7359b1..f7721975 100644
--- a/packages/ui/src/components/FormField.vue
+++ b/packages/ui/src/components/FormField.vue
@@ -44,7 +44,7 @@ const iconMapping = {
   <div class="$ui-base">
     <VueInput v-model="value" :placeholder="placeholder" @update-focused="f => focused = f" />
     <div
-      class="mt2 $ui-base text-14px" :class="[
+      class="mt2 $ui-base text-3.5" :class="[
         statusMapping[status],
         { 'opacity-65': !focused },
       ]"
diff --git a/packages/ui/src/components/Input.vue b/packages/ui/src/components/Input.vue
index 30b1a4d6..4f544962 100644
--- a/packages/ui/src/components/Input.vue
+++ b/packages/ui/src/components/Input.vue
@@ -76,7 +76,7 @@ watchEffect(() => {
 
 <template>
   <div
-    class="group relative w-200px w-auto flex items-center justify-between gap-2px overflow-hidden b-1 rounded-1 px12px py-3px color-gray-800 dark:color-gray-100"
+    class="group relative w-50 w-auto flex items-center justify-between gap-0.5 overflow-hidden b-1 rounded-1 px3 py-0.75 color-gray-800 dark:color-gray-100"
     :class="[
       {
         'border-none bg-transparent group': variant === 'flat',
@@ -111,7 +111,7 @@ watchEffect(() => {
     </div>
     <!-- Focus animation -->
     <div
-      v-if="!noFocusAnimation" class="pointer-events-none absolute bottom--1px left-50% right-50% z-9999 h-3px bg-primary-500 opacity-0 transition-all duration-240 group-[&.focused]:(left-0 right-0 opacity-100) group-[&.accent.focused]:bg-accent-500"
+      v-if="!noFocusAnimation" class="pointer-events-none absolute bottom--0.25 left-50% right-50% z-9999 h-0.75 bg-primary-500 opacity-0 transition-all duration-240 group-[&.focused]:(left-0 right-0 opacity-100) group-[&.accent.focused]:bg-accent-500"
     />
   </div>
 </template>
diff --git a/packages/ui/src/components/LoadingIndicator.vue b/packages/ui/src/components/LoadingIndicator.vue
index 345a6283..71046d76 100644
--- a/packages/ui/src/components/LoadingIndicator.vue
+++ b/packages/ui/src/components/LoadingIndicator.vue
@@ -1,5 +1,5 @@
 <template>
-  <div class="h-12px w-12px $ui-inline-fcc">
+  <div class="h-3 w-3 $ui-inline-fcc">
     <svg class="animate-spin" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24">
       <circle class="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" stroke-width="4" />
       <path class="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z" />
diff --git a/packages/ui/src/components/Select.vue b/packages/ui/src/components/Select.vue
index 68e2fde9..1ad748e1 100644
--- a/packages/ui/src/components/Select.vue
+++ b/packages/ui/src/components/Select.vue
@@ -46,7 +46,7 @@ const label = computed(() => {
     }"
   >
     <template #popper>
-      <div class="m1 min-w-140px w-auto flex flex-col">
+      <div class="m1 min-w-35 w-auto flex flex-col">
         <VueButton
           v-for="item in options" :key="item.value" v-close-popper="props.autoClose" :disabled="disabled" round="normal"
           class="flex-[auto_1_1] not-action:[&:not(.active)]:bg-transparent!"
diff --git a/packages/ui/src/components/Switch.vue b/packages/ui/src/components/Switch.vue
index 1212a70b..d6032f79 100644
--- a/packages/ui/src/components/Switch.vue
+++ b/packages/ui/src/components/Switch.vue
@@ -19,17 +19,17 @@ const toggleValue = useToggle(value)
     :class="[
       disabled ? 'cursor-not-allowed' : 'cursor-pointer',
     ]"
-    class="$ui-base $ui-if-sc cursor-pointer select-none gap5px vertical-mid text-14px" role="checkbox" @click="!disabled && toggleValue()"
+    class="$ui-base $ui-if-sc cursor-pointer select-none gap1.25 vertical-mid text-3.5" role="checkbox" @click="!disabled && toggleValue()"
   >
     <slot />
     <div
       :class="{
         selected: value,
       }"
-      class="group relative $ui-base h16px w32px rounded-8px bg-primary-100 transition-colors dark:bg-gray-700 [&.selected]:bg-primary-500!"
+      class="group relative $ui-base h4 w8 rounded-2 bg-primary-100 transition-colors dark:bg-gray-700 [&.selected]:bg-primary-500!"
     >
       <div
-        class="h16px w16px rounded-full bg-primary-800 transition-transform group-[&.selected]:transform-translate-x-16px dark:bg-white"
+        class="h4 w4 rounded-full bg-primary-800 transition-transform group-[&.selected]:transform-translate-x-4 dark:bg-white"
         :class="[
           { 'group-hover:opacity-75 group-active:scale-85': !disabled },
           { 'opacity-65': disabled },