New page and referrer url filters.

components/common/ButtonGroup.module.css

@@ -0,0 +1,25 @@
+.group {
+  display: inline-flex;
+  border-radius: 4px;
+  overflow: hidden;
+  border: 1px solid var(--gray400);
+}
+
+.group .button {
+  border-radius: 0;
+  background: var(--gray50);
+  border-left: 1px solid var(--gray400);
+  padding: 4px 8px;
+}
+
+.group .button:first-child {
+  border: 0;
+}
+
+.group .button + .button {
+  margin: 0;
+}
+
+.selected {
+  font-weight: 600;
+}