* {
  margin: 0;
}

body {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: 0;
  background-color: gray;
}

html {
  font: 12pt "Tinos";
}

section {
  position: relative;
  box-sizing: border-box;
  width: 210mm;
  height: 297mm;
  padding: 20mm 15mm 20mm 30mm;
  background-color: white;
  border-bottom: 1mm solid gray;
  overflow: hidden;
}

section.landscape {
  width: 297mm;
  height: 210mm;
  margin: 43.5mm 0 43.5mm 0;
  padding: 15mm 20mm 30mm 20mm;
  border-bottom: none;
  border-right: 1mm solid gray;
}

header {
  font-size: 1.5rem;
  font-weight: bolder;
}

h1 {
  font-size: 1.3rem;
}

h2 {
  font-size: 1.15rem;
}

h3 {
  font-size: 1rem;
}

.colr {
  gap: 5mm;
  display: flex;
  flex-direction: column-reverse;
}

.col {
  gap: 5mm;
  display: flex;
  flex-direction: column;
}

.row {
  gap: 5mm;
  display: flex;
  flex-direction: row;
}

.x-between {
  justify-content: space-between;
}

.x-center {
  justify-content: center;
}

.x-end {
  justify-content: end;
}

.y-start {
  align-items: start;
}

.y-center {
  align-items: center;
}

.y-end {
  align-items: end;
}

.left {
  text-align: left;
}

.right {
  text-align: right;
}

.center {
  text-align: center;
}

p {
  text-indent: 12.5mm;
  text-align: justify;
}

.page-number {
  position: absolute;
  left: 50%;
  bottom: 10mm;
}

.table-of-contents {
  overflow-x: hidden;
  list-style: none;
  padding: 0;
}

.table-of-contents ol {
  list-style: none;
}

.table-of-contents li:before {
  float: left;
  width: 0;
  white-space: nowrap;
  content:
    ". . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "
    ". . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "
    ". . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "
    ". . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ";
}

.table-of-contents span:first-child {
  padding-right: 0.33em;
  background-color: white;
}

.table-of-contents span+a {
  float: right;
  padding-left: 0.33em;
  background-color: white;
}

img {
  object-fit: contain;
}

table,
td,
th {
  border-collapse: collapse;
  border: 1px solid black;
}

.table-fixed {
  width: 100%;
  table-layout: fixed;
}

.tex.col {
  gap: 0;
}

.tex math {
  width: fit-content;
}