add animated buttons

add alternate bg svg image for light mode

styles.css

@@ -14,15 +14,17 @@
   --color-muted: rgba(255, 255, 255, 0.15);
   --color-banner: #2f8bfc;
   --color-text: hsl(0deg, 0%, 100%);
+  --body-bg: url("img/bg.svg") var(--color-bg) center no-repeat;
 }
 .light{
   --color-bg: #bddaff;
   --color-text: rgb(255, 255, 255); 
   --color-text: rgb(7, 3, 46); 
+  --body-bg: url("img/bg-dark.svg") var(--color-bg) center no-repeat;
 }
 
 body {
-  background: url("img/bg.svg") var(--color-bg) center no-repeat;
+  background: var(--body-bg);
   background-size: cover;
   background-blend-mode: soft-light;
   transition: background 0.2s, color 0.2s;
@@ -146,7 +148,29 @@ body {
   font-size: 0.2em;
 }
 
-@media screen and (min-width: 700px) {
+.controls-row{
+  display: flex;
+  flex-flow: column nowrap;
+  margin-bottom: 5vh;
+  gap: .5em;
+}
+.subtitle{
+  background: linear-gradient(-45deg, #0756b5, #80affa);
+  padding: .5em 1em;
+  border-radius: 0.3em;
+  /* border-top: 10px inset yellow;
+  border-left: 10px inset yellow; */
+  box-shadow: 2px 10px 3px -1px rgba(255, 255, 255, 0.205) inset;
+  animation: bg 3s ease infinite alternate;
+}
+
+@keyframes bg {
+  from{filter: hue-rotate(-75deg);}
+  to{filter: hue-rotate(75deg);}
+}
+/* and (min-width: 700px)  */
+@media screen and (min-width: 730px) and (orientation: landscape) {
+  body{overflow-y: hidden;}
   .banner{
     width: 20em;
     padding: 1em 5rem;
@@ -159,4 +183,8 @@ body {
     width: 1.8em;
     height: 1.8em;
   }
+  .controls-row{
+    flex-flow: row nowrap;
+    gap: 4em;
+  }
 }