add new decoration

src/components/decoration3/index.vue

@@ -0,0 +1,20 @@
+<template>
+  <div class="decoration-3">
+    <img src="./img/decoration.gif" />
+  </div>
+</template>
+
+<script>
+export default {
+  name: 'Decoration3'
+}
+</script>
+
+<style lang="less">
+.decoration-3 {
+
+  img {
+    width: 100%;
+  }
+}
+</style>