データ直接編集：
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="ja" lang="ja"> <head><meta http-equiv="content-type" content="text/html; charset=UTF-8" /></head> <body style="font-size:12px;background-color0:#FAFAFA"> <p style='font-family:"Times New Roman","Yu Gothic0","Yu Mincho"'>次回練習会(9/21 スタジオリリカ)まで、あと、 <span style="font-style:italic;font-family:'Times New Roman';font-size: 43px"><?php $t1 = mktime(0, 0, 0, 9,21, 2025);$t2 = time();$one_day = 60 * 60 * 24;$one_day2=ceil (($t1 - $t2) / $one_day); echo ($one_day2) ;?></span>日! <span style="font-size: 19px">ピアノ初心者の方大歓迎です!</span></p> </body></html>