docs: Add Vue School BTS banner (#3636)

Author: nicodevs

Diff for: docs/.vuepress/public/images/vueschool/close.svg

@@ -3,6 +3,10 @@
     class="main-container"
     :class="{ 'has-top-banner': showTopBanner }"
   >
+    <BannerTop
+      v-if="showTopBanner"
+      @close="closeBannerTop"
+    />
     <ParentLayout>
       <template #page-top>
         <CarbonAds
@@ -55,13 +59,23 @@ export default {
   components: {
     ParentLayout,
     CarbonAds,
-    BuySellAds
+    BuySellAds,
+    BannerTop: () => import('./components/BannerTop.vue')
   },
   data () {
     return {
       sponsors,
       showTopBanner: false
     }
+  },
+  mounted () {
+    this.showTopBanner = !localStorage.getItem('VS_BTS_BANNER_CLOSED')
+  },
+  methods: {
+    closeBannerTop () {
+      this.showTopBanner = false
+      localStorage.setItem('VS_BTS_BANNER_CLOSED', 1)
+    }
   }
 }
 </script>

Diff for: docs/.vuepress/public/images/vueschool/vs-backpack.png

@@ -11,7 +11,10 @@
         <img src="/images/vueschool/vs-backpack.png" alt="Backpack">
       </div>
       <div class="vs-slogan">
-        Extended! <span class="vs-slogan-light">Last few hours</span> for the Vue School offer
+        3-months Vue School for only $49 <span style="text-decoration: line-through; opacity: 0.5;">$75</span>!
+        <span class="vs-slogan-light">
+          Limited Time Offer
+        </span>
       </div>
       <div class="vs-button">
         GET ACCESS
@@ -90,7 +93,9 @@ $contentClass = '.theme-default-content'
     .vs-backpack
       margin-right: 6px
       @media (min-width: 680px)
-        margin-right: 2px
+        display: none
+      @media (min-width: 900px)
+        display: inline-block
       img
         height: 50px
         @media (min-width: 680px)
@@ -101,12 +106,10 @@ $contentClass = '.theme-default-content'
       font-weight: bold
       font-size: 14px
       text-align: center
-      padding: 0 60px
       @media (min-width: 680px)
         padding: 0
         text-align: left
-        margin-right: 26px
-        margin-right: 0
+        margin-left: 12px
         font-size: 18px
       > .vs-slogan-light
         color: #ff5338
@@ -124,6 +127,7 @@ $contentClass = '.theme-default-content'
       background: #ff5338
       font-weight: bold
       @media (min-width: 680px)
+        margin-left: 18px
         display: inline-block
 
   .vs-close