.sf-readmore__text{
  display:-webkit-box;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.sf-readmore.is-collapsed .sf-readmore__text{
  -webkit-line-clamp:var(--sf-lines,3);
}
.sf-readmore__btn{
  margin-top:10px;
  background:none;
  border:0;
  padding:0;
  cursor:pointer;
  font:inherit;
  text-decoration:underline;
}
.sf-readmore__btn:focus{outline:auto}