Hi There,
You can place the html code in a RAW Element in Cornerstone.
Give it a class to your column. For Examle: class: table-column
than paste the css code on your Cornerstone Custom CSS
but always add .table-column in front of every selector of the css code. For example:
.image {
width: 250px;
float: left;
margin: 20px;
}
wil be:
.table-column .image {
width: 250px;
float: left;
margin: 20px;
}
Hope that helps
Joao