add a banner.

Author: Junze888

_includes/banner.html

@@ -1,4 +1,4 @@
-<div class="hero_area">
+<div class="hero_area" xmlns="http://www.w3.org/1999/html">
     <div class="hero_bg_box">
         <img src="{{site.url}}/assets/images/banner.jpg" alt="">
     </div>
@@ -21,8 +21,7 @@ <h1>
                 </div>
             </div>
 
-            <span><strong>The first mineable DAG</strong></span>
-            <span><strong>Unlimited Trades, Endless Prowess</strong></span>
+            <span><strong>The first mineable DAG <br/>Unlimited Trades, Endless Prowess</strong></span>
 
             <div>
                 <a href="https://github.com/XDagger" target="_blank"><button class="bannerBtn2">source <i class="fa fa-angle-double-right"></i></button></a>

assets/css/style.css

@@ -956,7 +956,7 @@ a-scene {
 }
 .topText span{
   display: inline-block;
-  font-size: 24px;
+  font-size: 18px;
   height: 20vh;
   width: 550px;
   max-width: 80%;