更新组件演示页面，方便用户直接使用组件，去除tn-button的默认背景色，tn-avatar修改参数默认值，修复tn-avatar-group最开始头像进行了偏移、修复无法使用标签的bug，tn-badge修改参数默认值，tn-collapse-item修复背景颜色失效问题，滚动通知移除默认背景颜色和字体大小，tn-count-down修复时间单位不正确问题，列表组件修复背景颜色问题，tn-nav-bar返回按钮修改为可进行修改的图标，tn-step添加点击步骤进行跳转，tn-loading修复默认激活颜色出错问题，tn-tag移除默认背景颜色，优化阴影大小css

componentsPage/count-down/count-down.vue

@@ -1,6 +1,6 @@
 <template>
 
-  <view class="components-count_down">
+  <view class="components-count_down tn-safe-area-inset-bottom">
 
     <!-- 顶部自定义导航 -->
     <tn-nav-bar fixed>countdown倒计时</tn-nav-bar>
@@ -8,26 +8,48 @@
     <!-- 页面内容 -->
     <view :style="{paddingTop: vuex_custom_bar_height + 'px'}">
       
-      <dynamic-demo-template ref="demoTemplate" :tips="tips" :sectionList="sectionList" :full="false" @click="click">
-        <tn-count-down
-          :timestamp="timestamp"
-          :backgroundColor="backgroundColor"
-          :fontColor="fontColor"
-          :fontSize="fontSize"
-          :separator="separator"
-          :separatorColor="separatorColor"
-          :separatorSize="separatorSize"
-          :showBorder="showBorder"
-          :borderColor="borderColor"
-          :showDays="showDays"
-          :showHours="showHours"
-          :showMinutes="showMinutes"
-          :showSeconds="showSeconds"
-          :hideZeroDay="hideZeroDay"
-          @end="countDownEnd"
-        ></tn-count-down>
-      </dynamic-demo-template>
-
+      <demo-title title="基本使用">
+        <tn-count-down :timestamp="3600"></tn-count-down>
+      </demo-title>
+      
+      <demo-title title="显示边框">
+        <tn-count-down :timestamp="3600" :showBorder="true"></tn-count-down>
+      </demo-title>
+      
+      <demo-title title="中文分割时间">
+        <tn-count-down :timestamp="3600" separator="cn"></tn-count-down>
+      </demo-title>
+      
+      <demo-title title="天数为零时不隐藏">
+        <tn-count-down :timestamp="3600" :hideZeroDay="true"></tn-count-down>
+      </demo-title>
+      
+      <demo-title title="显示天">
+        <tn-count-down :timestamp="360000" :showDays="true" :showHours="false" :showMinutes="false" :showSeconds="false"></tn-count-down>
+      </demo-title>
+      
+      <demo-title title="显示天时">
+        <tn-count-down :timestamp="360000" :showDays="true" :showHours="true" :showMinutes="false" :showSeconds="false"></tn-count-down>
+      </demo-title>
+      
+      <demo-title title="显示天时分">
+        <tn-count-down :timestamp="360000" :showDays="true" :showHours="true" :showMinutes="true" :showSeconds="false"></tn-count-down>
+      </demo-title>
+      
+      <demo-title title="显示天时分秒">
+        <tn-count-down :timestamp="360000" :showDays="true" :showHours="true" :showMinutes="true" :showSeconds="true"></tn-count-down>
+      </demo-title>
+      
+      <demo-title title="自定义尺寸">
+        <tn-count-down :timestamp="3600" :fontSize="60" :separatorSize="60"></tn-count-down>
+      </demo-title>
+      
+      <demo-title title="自定义颜色">
+        <tn-count-down :timestamp="3600" backgroundColor="tn-main-gradient-indigo" fontColor="#FFFFFF"></tn-count-down>
+      </demo-title>
+      
+      <view class="tn-padding-bottom-lg"></view>
+      
     </view>
 
   </view>
@@ -35,134 +57,22 @@
 </template>
 
 <script>
-  import dynamicDemoTemplate from '@/libs/components/dynamic-demo-template.vue'
+  import demoTitle from '@/libs/components/demo-title.vue'
   export default {
     name: 'componentsCountDown',
-    components: {dynamicDemoTemplate},
+    components: {demoTitle},
     data() {
       return {
-        timestamp: 3600,
-        backgroundColor: '#FFFFFF',
-        fontSize: 30,
-        fontColor: '#080808',
-        separator: 'en',
-        separatorSize: 30,
-        separatorColor: '#080808',
-        showBorder: true,
-        borderColor: '#080808',
-        showDays: true,
-        showHours: true,
-        showMinutes: true,
-        showSeconds: true,
-        hideZeroDay: false,
-        
-        tips: ['无需依赖额外的样式文件','使用tn-count-down组件'],
-        sectionList: [
-          {
-            name: '参数切换',
-            section: [
-              {
-                title: '时间',
-                optional: ['360', '3600', '543000'],
-                methods: 'timestampChange',
-                current: 1
-              },
-              {
-                title: '大小',
-                optional: ['24', '30', '45'],
-                methods: 'sizeChange',
-                current: 1
-              },
-              {
-                title: '边框显示',
-                optional: ['显示','隐藏'],
-                methods: 'borderChange'
-              },
-              {
-                title: '分隔符',
-                optional: ['冒号','中文'],
-                methods: 'separatorChange'
-              },
-              {
-                title: '自定义颜色',
-                optional: ['默认','自定义'],
-                methods: 'customColorChange'
-              },
-              {
-                title: '自定义格式',
-                optional: ['日时分秒','时分秒'],
-                methods: 'customFormatChange'
-              }
-            ]
-          }
-        ]
       }
     },
     methods: {
-      click(event) {
-        this[event.methods] && this[event.methods](event)
-      },
-      // 切换时间
-      timestampChange(event) {
-        this.timestamp = Number(event.name)
-      },
-      // 切换边框显示
-      borderChange(event) {
-        this.showBorder = event.index === 0 ? true : false
-      },
-      // 切换分隔符
-      separatorChange(event) {
-        this.separator = event.index === 0 ? 'en' : 'cn'
-      },
-      // 切换大小
-      sizeChange(event) {
-        this.fontSize = Number(event.name)
-        this.separatorSize = Number(event.name)
-      },
-      // 切换自定义颜色
-      customColorChange(event) {
-        switch(event.index) {
-          case 0:
-            this.backgroundColor = '#FFFFFF'
-            this.separatorColor = '#080808'
-            this.fontColor = '#080808'
-            this.borderColor = '#080808'
-            break
-          case 1:
-            this.backgroundColor = '#E6E6E6'
-            this.separatorColor = '#01BEFF'
-            this.fontColor = '#3D7EFF'
-            this.borderColor = '#31C9E8'
-            break
-        }
-      },
-      // 切换自定义格式
-      customFormatChange(event) {
-        switch(event.index) {
-          case 0:
-            this.showDays = true
-            this.showHours = true
-            this.showMinutes = true
-            this.showSeconds = true
-            break
-          case 1:
-            this.showDays = false
-            this.showHours = true
-            this.showMinutes = true
-            this.showSeconds = true
-            break
-        }
-      },
-      
-      // 倒计时结束
-      countDownEnd() {
-        this.$t.messageUtils.toast('倒计时结束')
-      }
-
-    },
+    }
 
   }
 </script>
 
 <style lang="scss" scoped>
+  .components-count_down {
+    min-height: 100vh;
+  }
 </style>