fine tune prompt margin

Author: wxiaoguang

templates/shared/avatar_upload_crop.tmpl

@@ -3,6 +3,6 @@
 <input name="avatar" type="file" accept="image/png,image/jpeg,image/gif,image/webp">
 {{- /* the cropper-panel must be next sibling of the input "avatar" */ -}}
 <div class="cropper-panel tw-hidden">
-	<div>{{ctx.Locale.Tr "settings.cropper_prompt"}}</div>
+	<div class="tw-my-2">{{ctx.Locale.Tr "settings.cropper_prompt"}}</div>
 	<div class="cropper-wrapper"><img class="cropper-source" src alt></div>
 </div>