Replace the search submit button (including the magnifying glass) with my own

Hi,
Since this topic is closed, I need to open a new thread with a similar question:

How can I replace the search submit button (including the magnifying glass) with my own? The only difference is that I use the search widget in the header ;)

Please see screenshot here: http://imgur.com/liO9nRU

I already tried the solution that Victoria gave with the addition of a background image:

#search-3 #searchform #searchsubmit {
color: transparent;
background: #ffffff url(https://www.two2tango.info/newsite2017/wp-content/uploads/2017/08/arrow_search.png) no-repeat scroll right center !important; 
 padding: 0px!important;
}

As you can see it works but the only thing I can’t get to work is to get both the input field as the submit button the same height. The height of the input field is leading.

Thanks for your help!

Regards,

Steven

Regards,

Steven