#pf_single_product 
{ 
  max-width:600px; 
  display:block;
  margin-left:auto;
  margin-right:auto;
}
.pf_options
{
  display:flex; 
  flex-direction:row; 
  width:100%; 
  column-gap:10px
}

.pf_options select
{
  display:flex-column; 
  flex-direction:column; 
  width:50%; padding:10px
}
#pf_product_img img {
  width:100%; display:block;
}
#pf_single_product button
{
  max-width:200px; width:100%; display:block;
  margin-right: auto; margin-left: auto;
  text-align: center;
  font-weight: bold;
  font-size:20px; padding-top:15px; padding-bottom:15px;
}