Martin,
<span class="moz-break"></span>
body:-moz-last-node .moz-break::before {
content: "\200B"; /* Leerzeichen */
letter-spacing: -1ex;
}
Ziemliche Flickschusterei für U+200B zero width space bzw. U+200C zero width non-joiner.
Wobei manche Browser U+200B bzw. U+200C vielleicht als Blog o.ä. darstellen.
Gunnar
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I never intended HTML source code (the stuff with the angle brackets) to be seen by users. […] To my surprise, people quickly became familiar with the tags and started writing their own HTML documents directly. (Tim Berners-Lee in Weaving the Web)