Message after submitting not showing

What other plugins and theme do you use on the site?

I am not using any other specific plugin on that page. But I have the same issue on the other pages that I have contact formulas.

Hello @dminke

The message is showing but your CSS has the following style which sets font-size to 0px.

.wpcf7 .mk-contact-form-wrapper {
    font-size: 0px;
}

Remove above CSS or add the following:

div.wpcf7-response-output{
   font-size: 14px;
}

I can see the message was showing after all as you pointed out Jainil. However, I can′t find the first piece of CSS with the font-size 0px either on the specific page′s CSS or on the overall Custom-CSS.
The second CSS-code seems to work when you enter it on the specific page′s CSS where I have the Contact form 7 plugin – The text is shown again. But do you have a CSS-code that I can enter in my Custom CSS to my entire webpage so I can avoid putting your code in on +20 pages?

Hello @dminke

You can check this screenshot https://prntscr.com/rlqlhd for the 0px css.

Also, the CSS I provided will only be applied to the CF7 response message box only. So no need to add it on separate pages.

Thanks. I found it.

I have tried to add your code to my Custom-CSS and it didn’t work. I have also tried to add the code you provided to further settings under the specific contact formula. It will only work when I enter it on the specific page′s CSS where the CF7 plugin is used.