Adding beginnings of comparison feature

app/less/modal.less

@@ -0,0 +1,36 @@
+
+
+.modal-bg {
+  z-index: 2;
+  position: fixed;
+  top: 0;
+  bottom: 0;
+  left: 0;
+  right: 0;
+  background-color: rgba(0,0,0,0.5);
+}
+
+.modal {
+  width: 50%;
+  padding: 3em;
+  margin: 10em auto 0;
+  background-color: @bgBlack;
+  border: 1px solid @primary;
+
+  h1 {
+    margin: 0.2em 0;
+  }
+
+  h2 {
+    margin: 0;
+  }
+}
+
+.dismiss {
+  outline: none;
+  background-color: @primary-bg;
+  font-family: @fStandard;
+  color: @primary;
+  line-height: 1.5em;
+  border: 1px solid @primary;
+}