Minor UI fixes (#3970)

* Minor UI fixes

webapp/sass/components/_tutorial.scss

@@ -182,7 +182,7 @@
             display: inline-block;
             margin-bottom: 50px;
             max-width: 310px;
-            min-height: 410px;
+            min-height: 480px;
             position: relative;
             text-align: left;
         }
@@ -206,7 +206,7 @@
     }
 
     .tutorial__circles {
-        bottom: 40px;
+        bottom: 25px;
         position: absolute;
     }