hack 2.

lms/static/sass/features/_digital-locker.scss

@@ -55,7 +55,7 @@
 
 // Styling for digital locker on course page
 .course-view,
-.content-wrapper {
+.in-course {
   .locker-description {
     width: 100%;
     padding: 20px 10px;

openedx/features/course_experience/templates/course_experience/digital-locker-fragment.html

@@ -11,7 +11,7 @@ from openedx.features.course_experience import course_home_page_title
 %>
 
 <%block name="content">
-<div class="digital-locker" id="digital-locker">
+<div class="digital-locker ${'on-dashboard' if on_dashboard else 'in-course'}" id="digital-locker">
     <div class="locker">
         <iframe src="/cb/browser/${bucket_name}"></iframe>
     </div>

openedx/features/course_experience/views/digital_locker_fragment.py

@@ -25,6 +25,7 @@ class DigitalLockerFragmentView(EdxFragmentView):
         context = {
             'course_id': course_id,
             'bucket_name': bucket_name,
+            'on_dashboard': 'dashboard' in request.path,
         }
         html = render_to_string('course_experience/digital-locker-fragment.html', context)
         return Fragment(html)