table {
   all: initial;
}

td:not(:empty) {
   background: unset;
   box-shadow: none;
   height: 100%;
   padding: .25em;
   transition: none;
   vertical-align: top;
}
td:not(:empty):hover {
  box-shadow: none;
}

td[role] {
   font-weight: bold;
}
td[colspan] {
   padding-top: 2em;
}

main h1 {
   font-family: sans-serif;
   line-height: 1.8em;
   text-align: center;
}
main h2 {
   font-family: sans-serif;
   line-height: 1.7em;
}
main h3, main h4, main h5 {
   font-family: sans-serif;
}

article {
   font-size: 1.2em;
   line-height: 1.5em;
   padding: 0 1em;
}

body aside {
   overflow-y: scroll   ;
}

header nav {
    overflow: scroll;
    width: 48%;
} 
nav li {
   list-style: circle;
}