body, head
{
    font-family: Arial, Helvetica, sans-serif;
}

nav
{
    margin-left: 1rem;
}

h1
{
    margin-left: 1rem;
    font-size:x-large;
}

h2
{
    margin-left: 2rem;
    font-size: medium;
}

p
{
    margin-left: 2.5em;
}

ul, li
{
    margin-left: 1em;
}

code {
    background-color: ghostwhite;
    color:cornflowerblue;
    font-size: large;
}

.article-li
{
    margin-left: 1rem;
    font-size:x-large;
}

a 
{
    text-decoration: none;
}

a:link
{
    color:rgb(62, 207, 169) ;
}

a:visited, a:hover
{
    color:rgb(35, 134, 134);
}

.ackn {
    color: rgb(35, 134, 134);
    font-style: italic;
    text-align: center;
    font-size: 2rem;
    padding: 10px 10px 10px;
}

footer {
    text-align: center;
}

.frac { /*https://stackoverflow.com/questions/7525977/how-to-write-fraction-value-using-html*/
    display: inline-block;
    position: relative;
    vertical-align: middle;
    letter-spacing: 0.001em;
    text-align: center;
}

.frac > span {
    display: block;
    padding: 0.1em;
}

.frac span.bottom {
    border-top: thin solid black;
}

.frac span.symbol {
    display: none;
}