.main    { background-color:gold; }
.ruler   { background-image:url("ruler.gif"); background-repeat:repeat-y; }

.ac1     { font-size:60px; border:1px solid black; }
.ac2     { font-size:30px; border:1px solid black; font-weight:bold; }
.ac3     { font-size:12px; font-weight:bold; }

.raise35px   { vertical-align:35px;        }
.lower20px   { vertical-align:-20px;       }
.text-top    { vertical-align:text-top;    }
.middle      { vertical-align:middle;      }
.baseline    { vertical-align:baseline;    }
.text-bottom { vertical-align:text-bottom; }


