fix(row): fix demo button style bug (#1057)

Co-authored-by: bastarder <jie.qian@blockheaders.com>

packages/col/src/row.ts

@@ -29,8 +29,6 @@ export default defineComponent({
 
     const style = computed(() => {
       const ret = {
-        display: 'flex',
-        flexWrap: 'wrap',
         marginLeft: '',
         marginRight: '',
       }

packages/theme-chalk/src/row.scss

@@ -3,6 +3,8 @@
 @import "mixins/utils";
 
 @include b(row) {
+  display: flex;
+  flex-wrap: wrap;
   position: relative;
   box-sizing: border-box;
   @include utils-clearfix;

website/demo-styles/button.scss

@@ -1,6 +1,7 @@
 .demo-block.demo-button {
   .el-row {
     margin-bottom: 20px;
+    align-items: baseline;
 
     &:last-child {
       margin-bottom: 0;