Use d-block

app/assets/javascripts/projects/project_new.js

@@ -90,7 +90,7 @@ const bindEvents = () => {
   function chooseTemplate() {
     $('.template-option').hide();
     $projectFieldsForm.addClass('selected');
-    $selectedIcon.removeClass('active');
+    $selectedIcon.removeClass('d-block');
     const value = $(this).val();
     const templates = {
       rails: {
@@ -109,7 +109,7 @@ const bindEvents = () => {
 
     const selectedTemplate = templates[value];
     $selectedTemplateText.text(selectedTemplate.text);
-    $(selectedTemplate.icon).addClass('active');
+    $(selectedTemplate.icon).addClass('d-block');
     $templateProjectNameInput.focus();
   }
 

app/assets/stylesheets/bootstrap_migration.scss

@@ -161,10 +161,6 @@ table {
   }
 }
 
-.input-group-prepend svg.active {
-  border: 0 !important;
-}
-
 // Polyfill deprecated selectors
 
 .hidden {

app/assets/stylesheets/pages/projects.scss

@@ -541,10 +541,6 @@
         top: 7px;
         height: 20px;
         width: 20px;
-
-        &.active {
-          display: block;
-        }
       }
     }
   }