How do i change the shape of the slider arrows and page up, from the diamond shape to a circle?

Hello Matthew !
To change the shape of the slider arrows and page up, from the diamond shape to a circle in the DW Trendy, you can open the slides.php file in the folder path “\wp-content\themes\dw-trendy\lib”. Find the line 190 & line 191.
Replace the following code:

<a class="left carousel-control" href="#slide-<?php echo $id  ?>" data-slide="prev"><span><i class="fa fa-angle-left"></i></span></a>
<a class="right carousel-control" href="#slide-<?php echo $id  ?>" data-slide="next"><span><i class="fa fa-angle-right"></i></span></a>

 With new code:

<a class="left carousel-control" href="#slide-<?php echo $id  ?>" data-slide="prev"><span><i class="fa fa-circle-o"></i></span></a>
<a class="right carousel-control" href="#slide-<?php echo $id  ?>" data-slide="next"><span><i class="fa fa-circle-o"></i></span></a>

– Open the footer.php file in the folder path “wp-content\themes\dw-trendy\templates”
Replace the following code:

<div class="back-top"><a href="#page"><i class="fa fa-angle-up"></i></a></div>

With new code: 

<div class="back-top"><a href="#page"><i class="fa fa-circle-o"></i></a></div>

Hope this helps !