Refactor image URL handling and enhance tutorial component layout

jambotron-ui/src/app/modules/user-module/tutorial-add.component/tutorial-add.component.scss

@@ -9,9 +9,7 @@
 .markdown-editor-container{
   display: flex;
 }
-mat-card{
-  margin: 20px;
-}
+
 mat-card-title{
   color: cyan;
 }
@@ -55,3 +53,17 @@ mat-card-title{
   /*  display: block;
     float: right;*/
 }
+
+.label-style{
+  font-size: -webkit-xxx-large;
+  font-weight: bold;
+}
+
+
+.mat-mdc-card-outlined {
+  background-color: var(--mat-card-outlined-container-color, var(--mat-sys-surface));
+  border-radius:0;
+  border-width: var(--mat-card-outlined-outline-width, 1px);
+  border-color: var(--mat-card-outlined-outline-color, var(--mat-sys-outline-variant));
+  box-shadow: var(--mat-card-outlined-container-elevation, var(--mat-sys-level0));
+}