.rules-list { 
    counter-reset: section;
    list-style: none;
    padding-left: 0;
}
.rules-list > li {
    margin-bottom: 1.5rem;
}
.rules-list > li:before {
    counter-increment: section;
    content: counter(section) ".";
    font-weight: bold;
    margin-right: 10px;
}