By default joomla shows a number by each article when listing all the titles in a category view layout.
Here's how to remove the numbers...
Navigate to /components/com_content/views/category/tmpl/default_items.php and download the file.
To overide the file we need to copy it to the template folder. If it doesn't already exist, create the folder:
Open up the file and locate the line:
<?php echo $this->pagination->getRowOffset( $item->count ); ?>
Comment it out by changing it to:
<!--<?php echo $this->pagination->getRowOffset( $item->count ); ?>-->
This will remove the numbers by each article.
To remove the # in the head, locate the line:
<?php echo JText::_('Num'); ?>
And replace with:
<!--<?php echo JText::_('Num'); ?>-->
If you want to reduce the width of the column, just reduce the 5% in the line above to 1%
Save the file and upload it to
It should now look something like this