Still converting to bootstrap 5. Moved away from Wt's boostrap5 theme to better stick to vanilla bootstrap

approot/explore.xml

@@ -9,7 +9,7 @@
 <message id="Lms.Explore.template.play-btn"><i class="fa fa-fw fa-play"></i></message>
 
 <message id="Lms.Explore.template.filters">
-	${add-filter class="btn-sm btn-outline-primary me-2"}${clusters class="d-inline-block align-items-center"}
+	${add-filter class="btn btn-sm btn-outline-primary me-2"}${clusters class="d-inline-block align-items-center"}
 </message>
 
 <message id="Lms.Explore.template.add-filter">
@@ -28,7 +28,7 @@
 		</div>
 		<div class="col-12">
 			<div class="col-sm-offset-2 col-sm-10">
-				${add-btn class="btn-primary me-1"}${cancel-btn}
+				${add-btn class="btn btn-primary me-1"}${cancel-btn class="btn btn-secondary"}
 			</div>
 		</div>
 	</form>