Replaced usages of Responsive with @artsy/fresnel

Responsive has been removed in newest versions of semantic-ui-react

src/index.css

@@ -23,7 +23,7 @@ body, html {
   overflow: auto;
 }
 
-#sidePanel {
+.sidePanel {
   flex: 0 0 320px;
   overflow: auto;
   border-left: solid #ccc 1px;
@@ -68,7 +68,7 @@ div.ui.card.intro {
   -webkit-filter: blur(8px) opacity(30%);
 }
 
-.zoom {
+div.zoom {
   box-shadow: 0 1px 5px rgba(0,0,0,0.65);
   border-radius: 4px;
   position: fixed;
@@ -137,3 +137,7 @@ div.ui.card.intro {
   height: 24px;
   margin-right: 5px
 }
+
+.ui.top.attached.menu {
+  margin-top: 0px;
+}