IconGrid: extract some inline styles

src/components/IconGrid/IconGrid.css

@@ -47,6 +47,7 @@
   height: 0px;
   margin: 0px;
   border-radius: 16px;
+  background-color: rgba(163, 159, 171, 0.1);
   overflow: hidden;
 }
 
@@ -76,6 +77,7 @@
 }
 .snippet pre {
   text-overflow: ellipsis;
+  color: black;
 }
 .snippet button {
   background-color: transparent;
@@ -98,6 +100,10 @@
   height: 48px;
 }
 
+.button-row button svg {
+  margin-right: 8px;
+}
+
 .close {
   width: 10%;
   text-align: end;