Predefinição:Navegador/styles.css

.navegador{
    width: 100%;
    table-layout: fixed;
    margin: auto;
	margin-top: 10px;
    /*margin-bottom: 10px;*/
}
.navegador tbody{
	background:url(https://rec.institutodaguerra.com/images/d/d9/Background-black-noise.jpg)
}
.nav-container {
	position:sticky;
	top:0;
	margin-bottom: 0;
	z-index:3;
}