The only time I notice this is with kepubs, sideloaded or purchased, and when I have the hidden full screen reading option turned on. I don't justify the text, but I think it makes this problem worse.
As to styles, the ones that get into all my books are:
Code:
body {
display: block;
margin-bottom: 0;
margin-top: 0;
text-indent: 1.2em;
}
p {
margin-top: 0;
margin-bottom: 0;
text-indent: 1.2em;
widows: 1;
orphans: 1;
}
.sceneBreak {
margin-top: 2em;
text-indent: 0;
}
h2 + p, h3 + p, h4 + p, hr + p {
text-indent: 0;
}
I sometimes change the value for the text-indent and sceneBreak margin-top depending on how I feel and if the original version seemed to have a particular style.