/* Numbered headings */
body{counter-reset: section}
h2{counter-reset: sub-section}

h2:before{
 counter-increment: section;
 content: counter(section) ". ";
}
h3:before{
 counter-increment: sub-section;
 content: counter(sub-section, upper-latin) ". ";
}

/* Limiting image width and height */
img {
  max-width: 100%;
  height: auto;
  max-height: 400px;
  margin-left: auto;
  margin-right: auto;
}

/* Logo styles */
img.logo{
    width: 200px;
}

/* Image centering class */
img.center {
    display: block;
    margin: 0 auto;
}

/* Image items in a table such as BOM */
img.item {
    max-height: 50px;
    max-width: 80%;
    display: block;
    margin: 0 auto;
}

/* Table formatting */
table {
  border-collapse: collapse;
}
table, th, td {
  border: 1px solid black;
}
th, td {
  padding: 5px;
}
tr {
  text-align: middle;
}
tr:hover {background-color: #f0f0f0;}