diff --git a/dist/chota.css b/dist/chota.css
index dd89138..11b9914 100644
--- a/dist/chota.css
+++ b/dist/chota.css
@@ -524,12 +524,16 @@ button {
   display: flex;
 }
 .grouped > input:not(:last-child),
+.grouped > select:not(:last-child),
 .grouped > .button:not(:last-child) {
   margin-right: 16px;
 }
 .button + .button {
   margin-left: 1rem;
 }
+.buttons > .button + .button {
+  margin-left: 0;
+}
 .button:hover,
 [type="button"]:hover,
 [type="reset"]:hover,
@@ -612,6 +616,9 @@ button:disabled:hover {
 ::-webkit-input-placeholder {
   color: #bdbfc4;
 }
+::-moz-placeholder {
+  color: #bdbfc4;
+}
 :-ms-input-placeholder {
   color: #bdbfc4;
 }
diff --git a/docs/doc-styles.css b/docs/doc-styles.css
index 0ba6c87..dc05992 100644
--- a/docs/doc-styles.css
+++ b/docs/doc-styles.css
@@ -65,6 +65,10 @@ hr {
     margin: .5rem;
 }
 
+.buttons > .button + .button {
+    margin-left: .5rem;
+}
+
 .highlight, code { background-color: #f1f5f5; }
 .highlight .c { color: #93a1a1 } /* Comment */
 .highlight .err { color: #586e75 } /* Error */
diff --git a/src/_form.css b/src/_form.css
index a1c4f4a..177a9af 100644
--- a/src/_form.css
+++ b/src/_form.css
@@ -88,6 +88,7 @@ button {
 }
 
 .grouped > input:not(:last-child),
+.grouped > select:not(:last-child),
 .grouped > .button:not(:last-child) {
   margin-right: 16px;
 }
@@ -96,6 +97,10 @@ button {
   margin-left: 1rem;
 }
 
+.buttons > .button + .button {
+  margin-left: 0;
+}
+
 .button:hover,
 [type="button"]:hover,
 [type="reset"]:hover,