chg: usr: improve the gfx on homepage - implement login/register and activation for authentication - and add the first version of profile page #4

assets/css/homepage/_animations.scss

@@ -0,0 +1,9 @@
+@keyframes appear {
+    from { opacity: 0; transform: scale(0.94); }
+    to   { opacity: 1; transform: scale(1); }
+}
+
+@keyframes rise {
+    from { opacity: 0; transform: translateY(16px); }
+    to   { opacity: 1; transform: translateY(0); }
+}