How can I add an image to the title slide in Rmarkdown (xaringan)? - r-markdown

Question

I am making a presentation using xaringan. I would like to add the logo of my university in the background of the title slide. I would also like to know how to set the position of this image
Mi code is as follows:
---
title: "My presentations"
author: "My name"
date: "`r Sys.Date()`"
output:
xaringan::moon_reader:
chakra: libs/remark-latest.min.js
css: [xaringan-themer.css, my-theme.css]
nature:
countIncrementalSlides: false
titleSlideClass: ["left", "middle", "inverse"]
highlightLines: true
highlightStyle: solarized-dark
includes:
in_header: header.html
---
And this is the my-theme.css file
.title-slide a, a > code {
color: #aadff2;
text-decoration: none;
}
}
div.my-footer {
background-color: #E7EEF0;
position: absolute;
bottom: 0px;
left: 0px;
height: 30px;
width: 100%;
}
div.my-footer span {
font-size: 14pt;
color: #005f9b;
position: absolute;
left: 20px;
bottom: 10px;
}
.inverse {
background-color: #13306a;
color: #E7EEF0;
}

Answer 1

This worked for me when I was working on my theme. I used Joseph V. Casillas's Rutgers theme and Tuo Wang's UW Madison theme as a reference.
.title-slide {
background-image: url(https://commkit.gsu.edu/files/2019/06/PrimaryLogo3color.jpg);
background-position: 100% 0%; ## just start changing this
background-size: 300px;
background-color: #fff;
padding-left: 100px; /* delete this for 4:3 aspect ratio */
}