Overlapping Lines with in a Cell

For some reason in the past few days, lines within a Jupyter/iPython call are cutting into each other.

for example, in case of the above two lines, the “cutting into…” would be occluding the bottom half of “For some reason” line :frowning:

Do not know the cause of it. Looks like line spacing is too low.
All suggestions are pointing to setting the line-height in CSS.
But it does not seem to have any effect.

I am updating

C:\Users\arsre.jupyter\custom\custom.css

The changes to things in the file are having effect, and so I know I am touching the right .css file

#ipython_notebook::before{
content:“Welcome to Sri Jupyter”;
font-family: Verdana;
font-weight: 700;
color: red;
}

I have tried playing with line-height with the following css with no luck.
What is the correct CSS elem and property to set? to get right spacing between displayed lines?

div.text_cell_render {
font-family: lato;
font-size: 36pt;
line-height: 145%; /* added for some line spacing of text. */

}

div.text_cell_render code{
font-family: Monaco;
font-size: 24pt;
line-height: 145%; /* added for some line spacing of text. */

}

Thanks Sri.