p
{
text-align: justify;
}

.chapter
{
padding-left: 10px;
margin-left: 5px;
margin-right: 5px;
border-left: thin solid blue;
}

.section
{
padding-left: 10px;
margin-left: 10px;
margin-right: 10px;
border-left: thin solid green;
}

.commands
{
margin: 20px;
margin-left: 40px;
padding-left: 30px;
padding-top: 2px;
padding-bottom: 16px;
border-left: thin solid yellow;
white-space: pre;
}

.code
{
margin: 20px;
margin-left: 40px;
padding-left: 30px;
padding-top: 2px;
padding-bottom: 16px;
border-left: thin solid red;
white-space: pre;
font-family: monospace;
}

.diagram
{
align: center;
margin: 20px;
margin-left: 40px;
padding-left: 30px;
padding-top: 2px;
padding-bottom: 16px;
border-left: thin solid red;
white-space: pre;
font-family: monospace;
}

.copyright
{
margin: 10px;
border-top: thin solid black;
}