UX polish for pipeline status in pipeline editor

app/assets/javascripts/pipeline_editor/components/header/pipeline_status.vue

@@ -98,7 +98,7 @@ export default {
     </template>
     <template v-else>
       <a :href="status.detailsPath" class="gl-mr-auto">
-        <ci-icon :status="status" :size="18" />
+        <ci-icon :status="status" :size="16" />
       </a>
       <span class="gl-font-weight-bold">
         <gl-sprintf :message="$options.i18n.pipelineInfo">

app/assets/javascripts/pipeline_editor/pipeline_editor_app.vue

@@ -266,10 +266,20 @@ export default {
       @createEmptyConfigFile="setNewEmptyCiConfigFile"
     />
     <div v-else>
-      <gl-alert v-if="showSuccessAlert" :variant="success.variant" @dismiss="dismissSuccess">
+      <gl-alert
+        v-if="showSuccessAlert"
+        :variant="success.variant"
+        class="gl-mb-5"
+        @dismiss="dismissSuccess"
+      >
         {{ success.text }}
       </gl-alert>
-      <gl-alert v-if="showFailureAlert" :variant="failure.variant" @dismiss="dismissFailure">
+      <gl-alert
+        v-if="showFailureAlert"
+        :variant="failure.variant"
+        class="gl-mb-5"
+        @dismiss="dismissFailure"
+      >
         {{ failure.text }}
         <ul v-if="failureReasons.length" class="gl-mb-0">
           <li v-for="reason in failureReasons" :key="reason">{{ reason }}</li>