h1,h2,h3
{
font-family: arial, 'sans serif'; 
}

h3.sec:first-letter
{
font-size:x-large;
}

h3.sec
{
background-color:lightblue
}

body
{
background-color:white;
}

a:active  {}
a:hover   {background-color:yellow}

a.nav:active  {color:red}
a.nav:hover   {color:red;background-color:lightblue}