my_custom.css

/*
.main-block {
  break-inside: avoid;
}
*/
.break-after-me {
  break-after: page;
}
.break-before-me {
  break-before: page;
}

@page {
  size: 148mm 210mm;
  margin: 0;
}
* {
  box-sizing: border-box;
}/*
html {
  width: 46.8in;
  height: 33.09in;
}
body {
  margin: 0;
  font-size: 32px;
  width: 100%;
  height: 99.9%;
  grid-gap: 1.2in;
  padding: 1.2in;
  font-family: Optima, Calibri, sans-serif;
}

body {
  display: grid;
  grid-template-areas:
    'S1 S1 S1 S1'
    'S2 S4 S5 S9'
    'S2 S4 S5 S9'
    'S2 S4 S5 S9'
    'S2 S6 S6 S10'
    'S3 S7 S8 S11'
    'S3 S7 S8 S11'
    'S3 S7 S8 S11'
    'S3 S7 S8 S12'
    'S3 S7 S8 S12';
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: repeat(10, 1fr);
}

.section-1 { grid-area: S1; }
.section-2 { grid-area: S2; }
.section-3 { grid-area: S3; }
.section-4 { grid-area: S4; }
.section-5 { grid-area: S5; }
.section-6 { grid-area: S6; }
.section-7 { grid-area: S7; }
.section-8 { grid-area: S8; }
.section-9 { grid-area: S9; }
.section-10 { grid-area: S10; }
.section-11 { grid-area: S11; }
.section-12 { grid-area: S12; }
*/
h1, .poster-title, .figure {
  text-align: center;
}

.poster-title h1 {
  font-family: "Gill Sans", Verdana, sans-serif;
  font-size: 3em;
  color: darkblue;
}

.poster-title {
  border-bottom: .08in solid darkblue;
}

h1 {
  color: limegreen;
  margin: 0;
  padding: .5em;
  font-size: 1.5em;
}

.block {
  border: .1in solid steelblue;
  background-color: aliceblue;
}

.block h1 {
  background-color: steelblue;
  color: white;
}

.block > .content {
  padding: 1em;
  line-height: 1.5em;
}

table {
  margin: auto;
  border-top: 3px solid #666;
  border-bottom: 3px solid #666;
}
table thead th { border-bottom: 3px solid #ddd; }
td { padding: 8px; }
th { padding: 15px; }
caption { margin-bottom: 10px; }

a { text-decoration: none; }

h1 hr {
  border: 6px solid gray;
  clip-path: ellipse(50% 3px at center);
  margin: 0;
}

.figure-example {
  text-align: center;
}

.figure-example p:first-child {
  background-color: floralwhite;
  border: 5px dotted gray;
  width: 90%;
  height: 12em;
  padding: 1em 0;
  margin: 0 auto;
}

.logo-example {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
}
.logo-example > p {
  width: 30%;
  border: 5px dotted sandybrown;
  background-color: whitesmoke;
  height: 5em;
  text-align: center;
}