chore: added new a11y hovers to buttons

Author: doamatto

style.css

@@ -88,6 +88,17 @@ img.center {
     margin: -2px auto;
     cursor: pointer;
 }
+.stronglyAgree { background: #1b5e20; }
+.stronglyAgree:hover { background: #154a19; }
+.agree { background: #4caf50; }
+.agree:hover { background: #29942e; }
+.neutral { background: #949494; }
+.neutral:hover { background: #656565; }
+.disagree { background: #f44336; }
+.disagree:hover { background: #d6271a; }
+.stronglyDisagree { background: #b71c1c; }
+.stronglyDisagree:hover { background: #a00e0e; }
+
 .small_button, .small_button_off {
     background-color: #333;
     font-family: 'Montserrat', sans-serif;