Then, to disable the alert icon on invalid controls, until either users went through the control, or users did an action (such as "Save") that dispatched an fr-visit-all, add the following CSS. The first rule disables the background image and the second one enables it, overriding the first rule in cases where the alert is both active and the control is visited. Most likely, you will need to modify the relative path in the second rule, depending on the location of your CSS file. The path should resolve to /your-all/ops/images/xforms/exclamation.png if you are not in separate deployment, and /your-app/orbeon/ops/images/xforms/exclamation.png if you use separate deployment. Note that it is better here to have a relative URL (adjusting the number of .. in the path) rather than an absolute URL (starting with /your-app), as a relative URL allows you to change the context of your application without having to change the CSS.