What if you don’t want to enable spellcheck in your form’s text field? For example, your best friend’s name is something your browser doesn’t recognize? With the power of custom attributes in the Webflow Designer, you can forever remove the red line from any of your text fields.
Give your custom attribute a name of “spellcheck” and a value of “false.” After publishing your site to save your changes in two clicks, you will never have to deal with red lines in your form again.
Read about it: Custom attributes | Webflow University