Add Google Search in Social Header

My institution requires a Google Search toolbar in the top right of a maroon banner of our site. Almost all of our sites use Drupal, so this is our first time experimenting with WordPress and Kleo.

I’ve managed the banner, but am trying to implement the search toolbar. I installed and configured the WP Google Search (https://wordpress.org/plugins/wp-google-search/) plugin, and have done a bit of googling. I found this thread, that suggested I contact you all: https://wordpress.org/support/topic/how-can-i-add-search-box-in-header.

I can’t share a link to the site, since it’s currently locally hosted, but here’s a screenshot: http://i.imgur.com/BCZspFq.png

Here’s the CSS I did for the header:
/* Add UMass Brand to social header above header
*/
.social-header {
height: 50px;
border-bottom-width: 0px;
background-image: url(“http://128.119.164.207/wp-content/uploads/2015/08/umass-wordmark-small.png”) !important;
background-color: #881c1c;
background-repeat: no-repeat;
background-position: 3% 12px;
}

So, my question is: how can I add a Google Search toolbar to the top right of the maroon banner that occupies the Social Header of my site?