body{
  font-family: tahoma, verdana, arial;
  font-size: 13px;
}

pre{
  font-size: 10px;
}

table{
  border-collapse: collapse;
  margin-left:auto; 
  margin-right:auto;
}

table td{
  border: 1px solid #e5e5e5;
  padding: 5px;
}

.main{
  text-align: center; 
  padding-top: 15px;
}