Submit Buttons have 1px font size

[petergamston]

A complete newbie I have just built my first web site and it is 99.9% complete but I have been stuck for days on the very last thing. I have added a contact form (Using WPForms-lite

but I've now tried other form plug-ins with the same result) and the text on the submit button is 1px - just looks like dots! Over these days I've read countless articles telling me the default CSS is :
div.wpforms-container-full .wpforms-form button[type=submit] {
background-color: #eee; /* Grey background */
border: 1px solid #ddd; /* Dark grey border */
color: #333; /* Black text color */
font-size: 1em; /* Size of text */

and teaching me how to edit it but it doesn't make a blind bit of difference probably because when I inspect the button I don't see wpforms-form button[type=submit but rather

.elementor-kit-38 button, .elementor-kit-38 input[type="button"], .elementor-kit-38 input[type="submit"], .elementor-kit-38 .elementor-button {
font-size: 1px;

I can edit this to say 10px or simply uncheck the box so as to not specify a font size and low and behold the text is legible but I haven't a clue how to save the change to make it stick or why this is happening to me and apparently nobody else. (Active theme is Astra, all pages edited with Elementor)