You can use the following starting code for your Brightspace customlti.css



/*Brighspace */

body {

   font-family: Lato, "Lucida Sans Unicode", "Lucida Grande", sans-serif !important;

   color: #565a5c;

}


.buttonContent{


       background-color: #006fbf;

       border-radius: 0.3rem;

}


.buttonContent:hover {

       background-color:        #005694;

}



.light-theme a {

       text-decoration: none;

       background: #F2F3F5;

}


.light-theme a:hover {

       text-decoration: none;

       background: #E6EAF0;

}


.light-theme .current {

          background: #A8A8A8;

       border-color:#A8A8A8;        

}