Having Problems with my Simone Child Theme

I am having trouble with my child theme. The parent theme is the Simone theme and I am trying to have the navigation bar on the right instead of the left. Below is the code for the css and championproductions11.com is the site.

.main-navigation {
position: relative;
width: 100%;
clear: both;
font-family: ‘Lato’, sans-serif;
text-transform: uppercase;
}

.main-navigation ul {
margin: 0;
padding-left: 0;
list-style: none;
}

.main-navigation li {
float: right;
}