[Theme Horse Support Team]

Hi Eddie,

Please use custom HTML widget instead of video widget and wrap your iframe code with the below one:

<div class"container">
    <div class="embed-responsive embed-responsive-16by9">
         <!-- youtube embed code goes here -->
    </div>
</div>

As we have used Bootstrap framework you can also see this bootstrap doc to choose the related aspect ratios as per you need.

And for any other section you have to wrap your content with below one:

<div class"container">
    <!-- your content code goes here -->
</div>

Also why you are using another slider? You can use our built-in slider for you site. which is fluid and looks great for the site like yours.

Thank you for using our theme.