okmedicina
Hi
There are no table used this is the style how it work in Jomsocial
to make changes in the color css you can use insepect element tool from browser to see the code
example :
Override the code in template css/custom.css file with different color
.jomsocial-wrapper .jomsocial {
background: #ecf0f1;
}
this is BG color used on all JomSocial area.
About the representation of item you can do same process to apply custom style to change view.
If you want to add own style class it required customization in the core file.
here is guide help you to understand files in Jomsocial to override
https://documentation.jomsocial.com/wiki/Customizing_Template
