Help with Jillij CSS please

For the post headers:

h2 {
	font-size: 1.2em;
	}

For the post content (you’ll need to add in the font-size line):

.narrowcolumn .entry, .widecolumn .entry {
	line-height: 1.4em;
        font-size: 2em;
	}

2em is too big, mind! ??