more popup styling and work

styles.css

@@ -152,4 +152,46 @@
 
 .matbut:focus:not(:active)::after {
   animation: ripple 1s ease-out;
+}
+
+#snackbar {
+    visibility: hidden;
+    min-width: 250px; 
+    margin-left: -125px; 
+    background-color: #333;
+    color: #fff; 
+    text-align: center; 
+    border-radius: 2px; 
+    padding: 16px; 
+    position: fixed; 
+    z-index: 1; 
+    left: 50%; 
+    bottom: 30px;
+}
+
+#snackbar.show {
+    visibility: visible; 
+
+    -webkit-animation: fadein 0.5s, fadeout 0.5s 2.5s;
+    animation: fadein 0.5s, fadeout 0.5s 2.5s;
+}
+
+@-webkit-keyframes fadein {
+    from {bottom: 0; opacity: 0;} 
+    to {bottom: 30px; opacity: 1;}
+}
+
+@keyframes fadein {
+    from {bottom: 0; opacity: 0;}
+    to {bottom: 30px; opacity: 1;}
+}
+
+@-webkit-keyframes fadeout {
+    from {bottom: 30px; opacity: 1;} 
+    to {bottom: 0; opacity: 0;}
+}
+
+@keyframes fadeout {
+    from {bottom: 30px; opacity: 1;}
+    to {bottom: 0; opacity: 0;}
 }