Alert: improve style

packages/tabs/src/tabs.vue

@@ -91,7 +91,7 @@
       const activeBar = !type
         ? <div class="el-tabs__active-bar" style={barStyle}></div>
         : null;
-  
+
       const tabs = this.$children.map((tab, index) => {
         let btnClose = h('span', {
           class: {

packages/theme-default/src/alert.css

@@ -35,7 +35,7 @@
 
     @e content {
       display: table-cell;
-      padding-left: 8px;
+      padding: 0 8px;
     }
 
     @e icon {