ButtonSet refactor

src/components/button/Button.css

@@ -27,4 +27,26 @@
     visibility: hidden;
     width: 0;
     flex: 0 0 auto;
+}
+
+.p-buttonset .p-button {
+    margin: 0;
+}
+
+.p-buttonset .p-button:not(:first-child):not(:last-child) {
+    border-radius: 0;
+}
+
+.p-buttonset .p-button:first-child {
+    border-top-right-radius: 0;
+    border-bottom-right-radius: 0;
+}
+
+.p-buttonset .p-button:last-child {
+    border-top-left-radius: 0;
+    border-bottom-left-radius: 0;
+}
+
+.p-buttonset .p-button:focus {
+    z-index: 1;
 }

src/components/splitbutton/SplitButton.vue

@@ -84,10 +84,6 @@ export default {
     justify-content: center;
 }
 
-.p-splitbutton .p-button:focus {
-    z-index: 1;
-}
-
 .p-splitbutton .p-menu {
     min-width: 100%;
 }