Sometimes when using a code widget on a website, the widget might appear cut off. This happens because the size of the column is smaller than the size of the code widget.
What you can do is change the column size to fit your code widget (How to change the size of the columns?). Simply increase the column size until the code item is fully seen. The other option is to change the size of the code widget within the code widget itself, by editing the code, to fit the column size.