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If there is a long answer ,how to show part of the answer and hide the other part,  add a botton like "press to view all " ?

Q2A version: 1.54

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Best answer

CSS is most easiest way however it is not rock solid solution for your issue as php.

.qa-template-question .qa-main h1:fist-of-type{
white-space: nowrap;
you may try substr() if you are looking php solution.