[Improvement] Reorganize demos (#1052)

packages/vant-css/demo/index.vue

@@ -0,0 +1,85 @@
+<template>
+  <demo-section>
+    <demo-block :title="$t('ellipsis')">
+      <div class="van-ellipsis">{{ $t('text') }}</div>
+    </demo-block>
+
+    <demo-block :title="$t('hairline')">
+      <div class="van-hairline--top" />
+    </demo-block>
+
+    <demo-block :title="$t('animation')">
+      <van-switch-cell v-model="show" :title="$t('toggle')" :border="false" />
+      <van-row>
+        <transition name="van-fade">
+          <van-col span="8" v-show="show">Fade</van-col>
+        </transition>
+
+        <transition name="van-slide-bottom">
+          <van-col span="8" v-show="show">Slide Bottom</van-col>
+        </transition>
+      </van-row>
+    </demo-block>
+  </demo-section>
+</template>
+
+<script>
+export default {
+  i18n: {
+    'zh-CN': {
+      hairline: '1px 边框',
+      ellipsis: '文字省略',
+      animation: '动画',
+      toggle: '切换动画',
+      text: '这是一段宽度限制 250px 的文字，后面的内容会省略'
+    },
+    'en-US': {
+      hairline: 'Hairline',
+      ellipsis: 'Text Ellipsis',
+      animation: 'Animation',
+      toggle: 'Switch animation',
+      text: 'This is a paragraph of 250px width limit, the back will be omitted.'
+    }
+  },
+
+  data() {
+    return {
+      show: true
+    };
+  }
+};
+</script>
+
+<style lang="postcss">
+.demo-vant-css {
+  .van-ellipsis {
+    font-size: 13px;
+    margin-left: 15px;
+    max-width: 250px;
+  }
+
+  .van-hairline--top {
+    height: 30px;
+    background-color: #fff;
+
+    &::after {
+      top: 15px;
+    }
+  }
+
+  .van-col {
+    height: 50px;
+    color: #fff;
+    font-size: 14px;
+    border-radius: 3px;
+    text-align: center;
+    line-height: 50px;
+    margin-left: 15px;
+    background-color: #39a9ed;
+  }
+
+  .van-switch-cell {
+    margin-bottom: 15px;
+  }
+}
+</style>