diff --git a/src/_mixins/use-theme.js b/src/_mixins/use-theme.js
index e2b683263..97b9ce1ff 100644
--- a/src/_mixins/use-theme.js
+++ b/src/_mixins/use-theme.js
@@ -51,7 +51,11 @@ export default function useTheme (
       } = {}
     } = NConfigProvider
     const mergedCommon = merge(
-      common || injectedCommon || injectedGlobalCommon || defaultTheme.common,
+      common ||
+        injectedCommon ||
+        injectedGlobalCommon ||
+        defaultTheme.common ||
+        {},
       injectedGlobalCommonOverrides,
       injectedCommonOverrides,
       commonOverrides
@@ -59,7 +63,7 @@ export default function useTheme (
     return {
       common: mergedCommon,
       self: merge(
-        (self || injectedSelf || defaultTheme.self)(mergedCommon),
+        (self || injectedSelf || defaultTheme.self || {})(mergedCommon),
         injectedSelfOverrides,
         selfOverrides
       ),
diff --git a/src/affix/src/Affix.vue b/src/affix/src/Affix.vue
index f392d6802..aeb56f0a5 100644
--- a/src/affix/src/Affix.vue
+++ b/src/affix/src/Affix.vue
@@ -1,25 +1,27 @@
 <template>
   <div
+    ref="selfRef"
     class="n-affix"
     :class="{
       [`n-affix--affixed`]: affixed,
       [`n-affix--absolute-positioned`]: position === 'absolute'
     }"
-    :style="style"
+    :style="mergedstyle"
   >
     <slot />
   </div>
 </template>
 
 <script>
+import { ref, computed, onMounted, onBeforeUnmount } from 'vue'
 import { getScrollParent, unwrapElement } from 'seemly'
-import { configurable, themeable, withCssr } from '../../_mixins'
-import styles from './styles/index.js'
+import { useConfig, useTheme } from '../../_mixins'
 import { warn } from '../../_utils'
+import { affixLight } from '../styles'
+import style from './styles/index.cssr'
 
 export default {
   name: 'Affix',
-  mixins: [configurable, themeable, withCssr(styles)],
   props: {
     listenTo: {
       type: [String, Object],
@@ -54,54 +56,35 @@ export default {
       default: undefined
     }
   },
-  data () {
-    return {
-      scrollElement: null,
-      stickToTop: false,
-      stickToBottom: false,
-      bottomAffixedTriggerScrollTop: null,
-      topAffixedTriggerScrollTop: null
-    }
-  },
-  computed: {
-    affixed () {
-      return this.stickToBottom || this.stickToTop
-    },
-    mergedOffsetTop () {
-      return this.offsetTop === undefined ? this.top : this.offsetTop
-    },
-    mergedTop () {
-      return this.top === undefined ? this.offsetTop : this.top
-    },
-    mergedBottom () {
-      return this.bottom === undefined ? this.offsetBottom : this.bottom
-    },
-    mergedOffsetBottom () {
-      return this.offsetBottom === undefined ? this.bottom : this.offsetBottom
-    },
-    style () {
-      const style = {}
-      if (this.stickToTop && this.mergedOffsetTop !== undefined) {
-        style.top = `${this.mergedTop}px`
-      }
-      if (this.stickToBottom && this.mergedOffsetBottom !== undefined) {
-        style.bottom = `${this.mergedBottom}px`
-      }
-      return style
-    }
-  },
-  mounted () {
-    this.init()
-  },
-  beforeUnmount () {
-    const { scrollElement } = this
-    if (scrollElement) {
-      scrollElement.removeEventListener('scroll', this.handleScroll)
-    }
-  },
-  methods: {
-    init () {
-      const { target: getScrollTarget, listenTo } = this
+  setup (props) {
+    useTheme('Affix', 'Affix', style, affixLight, props)
+    const scrollElementRef = ref(null)
+    const stickToTopRef = ref(false)
+    const stickToBottomRef = ref(false)
+    const bottomAffixedTriggerScrollTopRef = ref(null)
+    const topAffixedTriggerScrollTopRef = ref(null)
+    const affixedRef = computed(() => {
+      return stickToBottomRef.value || stickToTopRef.value
+    })
+    const mergedOffsetTopRef = computed(() => {
+      const { offsetTop, top } = props
+      return offsetTop === undefined ? top : offsetTop
+    })
+    const mergedTopRef = computed(() => {
+      const { offsetTop, top } = props
+      return top === undefined ? offsetTop : top
+    })
+    const mergedBottomRef = computed(() => {
+      const { offsetBottom, bottom } = props
+      return bottom === undefined ? offsetBottom : bottom
+    })
+    const mergedOffsetBottomRef = computed(() => {
+      const { offsetBottom, bottom } = props
+      return offsetBottom === undefined ? bottom : offsetBottom
+    })
+    const selfRef = ref(null)
+    const init = () => {
+      const { target: getScrollTarget, listenTo } = props
       let scrollElement
       if (getScrollTarget) {
         // deprecated
@@ -109,56 +92,89 @@ export default {
       } else if (listenTo) {
         scrollElement = unwrapElement(listenTo)
       } else {
-        scrollElement = getScrollParent(this.$el)
+        scrollElement = getScrollParent(selfRef.value)
       }
       if (scrollElement) {
-        this.scrollElement = scrollElement
+        scrollElementRef.value = scrollElement
       } else if (__DEV__) {
         warn('affix', 'Target to be listened to is not valid.')
       }
       if (scrollElement) {
-        scrollElement.addEventListener('scroll', this.handleScroll)
-        this.handleScroll()
+        scrollElement.addEventListener('scroll', handleScroll)
+        handleScroll()
       }
-    },
-    handleScroll (e) {
-      const containerEl = this.scrollElement
-      if (this.affixed) {
-        if (containerEl.scrollTop < this.topAffixedTriggerScrollTop) {
-          this.stickToTop = false
-          this.topAffixedTriggerScrollTop = null
+    }
+    const handleScroll = (e) => {
+      const containerEl = scrollElementRef.value
+      if (affixedRef.value) {
+        if (containerEl.scrollTop < topAffixedTriggerScrollTopRef.value) {
+          stickToTopRef.value = false
+          topAffixedTriggerScrollTopRef.value = null
         }
-        if (containerEl.scrollTop > this.bottomAffixedTriggerScrollTop) {
-          this.stickToBottom = false
-          this.bottomAffixedTriggerScrollTop = null
+        if (containerEl.scrollTop > bottomAffixedTriggerScrollTopRef.value) {
+          stickToBottomRef.value = false
+          bottomAffixedTriggerScrollTopRef.value = null
         }
         return
       }
       const containerRect = containerEl.getBoundingClientRect()
-      const affixRect = this.$el.getBoundingClientRect()
+      const affixRect = selfRef.value.getBoundingClientRect()
       const pxToTop = affixRect.top - containerRect.top
       const pxToBottom = containerRect.bottom - affixRect.bottom
-      const { mergedOffsetTop, mergedOffsetBottom } = this
+      const mergedOffsetTop = mergedOffsetTopRef.value
+      const mergedOffsetBottom = mergedOffsetBottomRef.value
       if (mergedOffsetTop !== undefined && pxToTop <= mergedOffsetTop) {
-        this.stickToTop = true
-        this.topAffixedTriggerScrollTop =
+        stickToTopRef.value = true
+        topAffixedTriggerScrollTopRef.value =
           containerEl.scrollTop - (mergedOffsetTop - pxToTop)
       } else {
-        this.stickToTop = false
-        this.topAffixedTriggerScrollTop = null
+        stickToTopRef.value = false
+        topAffixedTriggerScrollTopRef.value = null
       }
       if (
         mergedOffsetBottom !== undefined &&
         pxToBottom <= mergedOffsetBottom
       ) {
-        this.stickToBottom = true
-        this.bottomAffixedTriggerScrollTop =
+        stickToBottomRef.value = true
+        bottomAffixedTriggerScrollTopRef.value =
           containerEl.scrollTop + mergedOffsetBottom - pxToBottom
       } else {
-        this.stickToBottom = false
-        this.bottomAffixedTriggerScrollTop = null
+        stickToBottomRef.value = false
+        bottomAffixedTriggerScrollTopRef.value = null
       }
     }
+    onMounted(() => {
+      init()
+    })
+    onBeforeUnmount(() => {
+      const scrollElement = scrollElementRef.value
+      if (scrollElement) {
+        scrollElement.removeEventListener('scroll', handleScroll)
+      }
+    })
+    return {
+      ...useConfig(props),
+      selfRef,
+      scrollElement: scrollElementRef,
+      stickToTop: stickToTopRef,
+      stickToBottom: stickToBottomRef,
+      bottomAffixedTriggerScrollTop: bottomAffixedTriggerScrollTopRef,
+      topAffixedTriggerScrollTop: topAffixedTriggerScrollTopRef,
+      affixed: affixedRef,
+      mergedstyle: computed(() => {
+        const style = {}
+        if (stickToTopRef.value && mergedOffsetTopRef.value !== undefined) {
+          style.top = `${mergedTopRef.value}px`
+        }
+        if (
+          stickToBottomRef.value &&
+          mergedOffsetBottomRef.value !== undefined
+        ) {
+          style.bottom = `${mergedBottomRef.value}px`
+        }
+        return style
+      })
+    }
   }
 }
 </script>
diff --git a/src/affix/src/styles/base.cssr.js b/src/affix/src/styles/base.cssr.js
deleted file mode 100644
index 22bc9a564..000000000
--- a/src/affix/src/styles/base.cssr.js
+++ /dev/null
@@ -1,18 +0,0 @@
-import { c, cB, cM } from '../../../_utils/cssr'
-
-export default c([
-  () => {
-    return cB(
-      'affix',
-      [
-        cM('affixed', {
-          position: 'fixed'
-        }, [
-          cM('absolute-positioned', {
-            position: 'absolute'
-          })
-        ])
-      ]
-    )
-  }
-])
diff --git a/src/affix/src/styles/index.cssr.js b/src/affix/src/styles/index.cssr.js
new file mode 100644
index 000000000..2e371b0fe
--- /dev/null
+++ b/src/affix/src/styles/index.cssr.js
@@ -0,0 +1,14 @@
+import { cB, cM } from '../../../_utils/cssr'
+
+export default cB(
+  'affix',
+  [
+    cM('affixed', {
+      position: 'fixed'
+    }, [
+      cM('absolute-positioned', {
+        position: 'absolute'
+      })
+    ])
+  ]
+)
diff --git a/src/affix/src/styles/index.js b/src/affix/src/styles/index.js
deleted file mode 100644
index 72ffee344..000000000
--- a/src/affix/src/styles/index.js
+++ /dev/null
@@ -1,9 +0,0 @@
-import baseStyle from './base.cssr.js'
-
-export default [
-  {
-    key: 'mergedTheme',
-    watch: ['mergedTheme'],
-    CNode: baseStyle
-  }
-]
diff --git a/src/affix/styles/dark.js b/src/affix/styles/dark.js
index b45532b34..b1c6ea436 100644
--- a/src/affix/styles/dark.js
+++ b/src/affix/styles/dark.js
@@ -1,11 +1 @@
-import create from '../../_styles/utils/create-component-base'
-import { baseDark } from '../../_styles/base'
-
-export default create({
-  theme: 'dark',
-  name: 'Affix',
-  peer: [baseDark],
-  getLocalVars () {
-    return {}
-  }
-})
+export default {}
diff --git a/src/affix/styles/light.js b/src/affix/styles/light.js
index 824bcf48b..b1c6ea436 100644
--- a/src/affix/styles/light.js
+++ b/src/affix/styles/light.js
@@ -1,11 +1 @@
-import create from '../../_styles/utils/create-component-base'
-import { baseLight } from '../../_styles/base'
-
-export default create({
-  theme: 'light',
-  name: 'Affix',
-  peer: [baseLight],
-  getLocalVars () {
-    return {}
-  }
-})
+export default {}
diff --git a/src/divider/src/styles/index.cssr.js b/src/divider/src/styles/index.cssr.js
index e8816a432..7ff0face9 100644
--- a/src/divider/src/styles/index.cssr.js
+++ b/src/divider/src/styles/index.cssr.js
@@ -1,92 +1,90 @@
-import { c, cB, cNotM, cE, cM } from '../../../_utils/cssr'
+import { cB, cNotM, cE, cM } from '../../../_utils/cssr'
 
 // vars:
 // --bezier
 // --color
 // --text-color
 // --font-weight
-export default c([
-  cB(
-    'divider', `
-      position: relative;
-      display: flex;
-      width: 100%;
-      box-sizing: border-box;
-      font-size: 16px;
-      color: var(--text-color);
-      transition:
-        color .3s var(--bezier),
-        background-color .3s var(--bezier);
+export default cB(
+  'divider', `
+    position: relative;
+    display: flex;
+    width: 100%;
+    box-sizing: border-box;
+    font-size: 16px;
+    color: var(--text-color);
+    transition:
+      color .3s var(--bezier),
+      background-color .3s var(--bezier);
+  `,
+  [
+    cNotM('vertical', `
+      margin-top: 24px;
+      margin-bottom: 24px;
     `,
     [
-      cNotM('vertical', `
-        margin-top: 24px;
-        margin-bottom: 24px;
-      `,
-      [
-        cNotM('no-title', `
-          display: flex;
-          align-items: center;
-        `)
-      ]),
-      cE('title', `
+      cNotM('no-title', `
         display: flex;
         align-items: center;
-        margin-left: 12px;
-        margin-right: 12px;
-        white-space: nowrap;
-        font-weight: var(--font-weight);
-      `),
-      cM('title-position-left', [
-        cE('line', [
-          cM('left', {
-            width: '28px'
-          })
-        ])
-      ]),
-      cM('title-position-right', [
-        cE('line', [
-          cM('right', {
-            width: '28px'
-          })
-        ])
-      ]),
-      cM('dashed', [
-        cE('line', `
-          background-color: transparent;
-          height: 0px;
-          width: 100%;
-          border-style: dashed;
-          border-width: 1px 0 0;
-        `)
-      ]),
-      cM('vertical', `
-        display: inline-block;
-        height: 1em;
-        margin: 0 8px;
-        vertical-align: middle;
-        width: 1px;
-      `),
+      `)
+    ]),
+    cE('title', `
+      display: flex;
+      align-items: center;
+      margin-left: 12px;
+      margin-right: 12px;
+      white-space: nowrap;
+      font-weight: var(--font-weight);
+    `),
+    cM('title-position-left', [
+      cE('line', [
+        cM('left', {
+          width: '28px'
+        })
+      ])
+    ]),
+    cM('title-position-right', [
+      cE('line', [
+        cM('right', {
+          width: '28px'
+        })
+      ])
+    ]),
+    cM('dashed', [
       cE('line', `
-        border: none;
-        transition: background-color .3s var(--bezier), border-color .3s var(--bezier);
-        height: 1px;
+        background-color: transparent;
+        height: 0px;
         width: 100%;
-        margin: 0;
-      `),
-      cNotM('dashed', [
-        cE('line', {
-          backgroundColor: 'var(--color)'
-        })
-      ]),
-      cM('dashed', [
-        cE('line', {
-          borderColor: 'var(--color)'
-        })
-      ]),
-      cM('vertical', {
+        border-style: dashed;
+        border-width: 1px 0 0;
+      `)
+    ]),
+    cM('vertical', `
+      display: inline-block;
+      height: 1em;
+      margin: 0 8px;
+      vertical-align: middle;
+      width: 1px;
+    `),
+    cE('line', `
+      border: none;
+      transition: background-color .3s var(--bezier), border-color .3s var(--bezier);
+      height: 1px;
+      width: 100%;
+      margin: 0;
+    `),
+    cNotM('dashed', [
+      cE('line', {
         backgroundColor: 'var(--color)'
       })
-    ]
-  )
-])
+    ]),
+    cM('dashed', [
+      cE('line', {
+        borderColor: 'var(--color)'
+      })
+    ]),
+    cM('vertical', {
+      backgroundColor: 'var(--color)'
+    })
+  ]
+)
diff --git a/src/styles.js b/src/styles.js
index d89e33562..f31102d73 100644
--- a/src/styles.js
+++ b/src/styles.js
@@ -17,7 +17,7 @@ export {
 export { baseWaveDark, baseWaveLight } from './_base/wave/styles'
 // exposed style
 export { baseDark, baseLight } from './_styles/base'
-export { affixDark, affixLight } from './affix/styles'
+// export { affixDark, affixLight } from './affix/styles'
 export { alertDark, alertLight } from './alert/styles'
 export { anchorDark, anchorLight } from './anchor/styles'
 export { autoCompleteDark, autoCompleteLight } from './auto-complete/styles'