Windows 10 Phone - UWP app webview html page does not scale to full screen
<p>I have a simple html page loaded to the webview control in Windows Phone  which does not scale to the full screen and a white patch appears (as the image attached).</p>

<p><a href="https://i.stack.imgur.com/tL0Yj.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/tL0Yj.png" alt="enter image description here"></a>
The WebView code is as follows:</p>

<pre><code>&lt;Page
x:Class="loadtime.MainPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="using:loadtime"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d"&gt;

&lt;Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}"&gt;
    &lt;WebView x:Name="mainWebView"&gt;&lt;/WebView&gt;
&lt;/Grid&gt;
</code></pre>

<p></p>

<p>The html:</p>

<pre><code>&lt;!DOCTYPE html&gt;
&lt;html lang="en" xmlns="http://www.w3.org/1999/xhtml"&gt;
    &lt;head&gt;
        &lt;meta charset="utf-8" /&gt;
        &lt;title&gt;&lt;/title&gt;
    &lt;/head&gt;
    &lt;body style="background-color:red; border: 1px solid blue;"&gt;
    &lt;/body&gt;
&lt;/html&gt;
</code></pre>

<p>Whats could be the reason? Is there any other properties that need to be enabled?</p>