Copy vCita Contact Form HTML code:
Login to your vCita dashboard click on Edit LiveSite button then click on Add to Website. Click on Edit next to the Contact Form option to customize and design your widget.
Click Add To Website button and select Other websites
Copy the HTML code
Add vCita Contact Form to your website:
On your Tumblr website go to the Preference tab.
Click to Customize your blog.
In the sidebar insert a title
Paste the HTML code copied from vCita in the Description section
Click Save+Close.