diff --git a/InterSpec_resources/InterSpec.css b/InterSpec_resources/InterSpec.css
index 3819c255..fd82d51a 100644
--- a/InterSpec_resources/InterSpec.css
+++ b/InterSpec_resources/InterSpec.css
@@ -227,12 +227,18 @@ button.Wt-btn.LightButton, .btn-group.LightButton
 }
 
 /* .btn-group is for WSplitButton */
+.btn-group
+{
+  box-sizing: border-box;
+  display: flex;
+  flex-direction: row;
+  align-items: center;
+}
+
 .btn-group.LightButton > button.Wt-btn
 {
   border-top: none;
   border-bottom: none;
-  margin-top: -1px;
-  padding-top: 3px;
 }
 
 .btn-group.LightButton > button.Wt-btn.dropdown-toggle.LightButton
diff --git a/InterSpec_resources/InterSpecMobileApple.css b/InterSpec_resources/InterSpecMobileApple.css
index 91b91a24..e5daa79f 100644
--- a/InterSpec_resources/InterSpecMobileApple.css
+++ b/InterSpec_resources/InterSpecMobileApple.css
@@ -6,8 +6,6 @@ button, button:hover,
   border:1px solid rgb(0,122,255);
   color: rgb(0,122,255) !important;
   background: none;
-  -moz-border-radius: 5px;
-  -webkit-border-radius: 5px;
   border-radius: 5px;
   height: 23px;
 }
diff --git a/InterSpec_resources/IsotopeSearchByEnergy.css b/InterSpec_resources/IsotopeSearchByEnergy.css
index 1ebf84af..5c29a590 100644
--- a/InterSpec_resources/IsotopeSearchByEnergy.css
+++ b/InterSpec_resources/IsotopeSearchByEnergy.css
@@ -53,7 +53,7 @@
 
 .AssignToSelectedRow .LightButton.btn-group
 {
-  box-sizing: border-box;
+  
 }
 
 .AssignToSelectedRow button.Wt-btn.LightButton:hover