SimpleerTube_peertube_minimalist_frontend/static/style.css

body {
    background-color: lightyellow;
    max-width: 800px;
    margin: 10px auto;
    padding-left: 5px;
    padding-right: 5px;
}

.tag {
    background-color: lightgrey;    
    padding: 3px 7px;
    display: inline;
}