Style approve button with top-margin.

app/assets/javascripts/merge_request_widget/approvals/components/approvals_body.js.es6

@@ -39,7 +39,7 @@
       gl.ApprovalsStore.initStoreOnce();
     },
     template: `
-      <div v-if='showApprovalsBody'>
+      <div class='approvals-body' v-if='showApprovalsBody'>
         <h4> Requires {{ approvalsRequiredStringified }} (from {{ approverNamesStringified }})</h4>
         <div v-if='showApproveButton' class='append-bottom-10'>
           <button

app/assets/stylesheets/pages/merge_requests.scss

@@ -428,6 +428,11 @@
     padding-right: 0;
   }
 }
+.approvals-body {
+  .approve-btn {
+    margin-top: 20px;
+  }
+}
 
 .approvals-footer {
   display: flex;