Hello,
In order to add custom Css, you can learn in details how to process
here
.
Now, in order to create a space below the picture, you can use the command
margin-bottom, like this by example :
Code:
Your_Image_Class {
margin-bottom: 10px;
}
If that doesn't work you can add an "
!important" :
Code:
margin-bottom: 10px !important;
Regards