The feature that was recently rolled out is NOT responsive landing pages, rather it creates a separate mobile version, this is very different than responsive design.When will the marketo landing page editor be able to accept outside CSS with media queries, for a true responsive landing page?
I got really fed up not having a mobile landing page for our company so I took things into my own hands and looks like I came up with a similar solution to Marketo, except it only took my a couple of hours.
Similar to Marketo you create 2 landing pages, one optimised for desktop and one for mobile.
The only link you ever share is the link to the desktop version, this LP includes Script in the Head Tags that redirects to the mobile version depending on the screen size of the device in use.
Here is an example I put together, take a look:
Desktop version: https://info.quantcast.com/mobile-responsive-desktop-lp.html
Mobile version: https://info.quantcast.com/mobie-responsive-mobile.html
Nobody ever gets the link to the mobile version and we never share it but instead viewers get redirected to it from the desktop version if their screen size is less tha 800px.
Also you may notice I have placeholder text working in the form which is a very nice feature and relatively straight forward to implement.
In addition to this I have created a cutom hiddden field in the form to track all downloads from desktop vs mobile.
If you have any questions or want to know more feel free to reach out to me, I'll be happy to help.
All the best,