How can I set the margins to zero?

Hi There,

Whatever I do, I cannot get the modules touching each other. Here are two pictures one shows what I'm trying to achieve - the other one is what I get. There seems to be a margin between the columns and cannot see what to hack to get rid off as setting the CSS margin 0px is not working. Tried two modules in a row / tried picture and module in a row.

Found a work around by giving negative margins - indicates that bootstrap.css is in play somewhere.

margin-left: -2.127659574468085%;*
margin-left: -2.074468085106383%;
margin-right: -2.127659574468085%;*
margin-right: -2.074468085106383%;

Hi
yes it uses Bootstrap to manage the columns, and then there is a space between each one by default
CEd