WordPress’s plugin “AForms” is a Form builder for Cost estimation and ordering. You can also create Contact Forms.
You can customize the form styles via SCSS and the wording via ini file, so you can integrate forms into your site straightforwardly.
Place .ini file and you can customize wording. .ini file is plain text file in which you write “<name> = <value>” style settings.
You can customize styles with scss. The scss source is bundled with this plugin, so it is recommended to modify this.
AForms is listed in WordPress’s official plugin directory.