There are 2 Sidebar Icon in our theme:

1. Stroke Icon
2. Fill Icon

Lets look at them one by one.

Stroke Icon:

Shows the Stroke Icons

To have all the sidebar icons to be stroke add sidebar-layout = 'stroke-svg' attribute in below mentioned div

Fill Icon:

Shows the Fill Icon

To have all the sidebar icons to be fill add sidebar-layout = 'fill-svg' attribute in below mentioned div

These changes are applied by changing the attribute in the below given div .

<div class="sidebar-wrapper close_icon" sidebar-layout="ATTRIBUTE_VLAUE" >...</div>