body 
{
font-family: Arial, Helvetica, sans-serif;
font-size: 12px;
}
h1
{
font-family: Arial, Helvetica, sans-serif;
font-size: 19px;
}
h2
{
font-family: Arial, Helvetica, sans-serif;
font-size: 17px;
}
h3, h4
{
font-family: Arial, Helvetica, sans-serif;
font-size: 15px;
}