Gravity Wiz | File Upload Pro | Hide Error Messages

snippet.css

/* To hide the red error box that's related to the multi-file form field: */
ul[id^='gform_multifile_messages_'] {
    display: none;
}

/* Keeping the "Max file size" text while removing the "Max files: 1" part is probably the trickiest CSS rule, however if you're okay with playing with the numbers in this rule, you could try something like this: */
span.gfield_description.gform_fileupload_rules  {
    max-width: 9.7em;
    overflow: hidden;
    max-height: 2.3em;
}