ol {
    padding-left: inherit;
}

ul {
    margin-top: 0;
}

body {
    counter-reset: level1;
}

h1:nth-child(1n+2) {
    counter-increment: level1;
}

h1:nth-child(1n+2)::before {
    content: counter(level1, upper-roman) ". ";
}