MC-5423: Scheduled Update slide out issues

- Resolve issue with header spacing

Author: davemacaulay

app/code/Magento/PageBuilder/view/adminhtml/web/css/source/_page-builder.less

@@ -7,6 +7,7 @@
 
 .pagebuilder-header {
     text-align: right;
+    margin-bottom: 15px;
 
     > .icon-pagebuilder-fullscreen {
         cursor: pointer;

app/code/Magento/PageBuilder/view/adminhtml/web/css/source/_panel.less

@@ -49,7 +49,6 @@
 .pagebuilder-panel-wrapper {
     -moz-transition: opacity .75s ease-in-out, visibility .75s ease-in-out;
     -webkit-transition: opacity .75s ease-in-out, visibility .75s ease-in-out;
-    bottom: 0;
     float: left;
     opacity: 0;
     position: relative;