摘要：
px:相对长度单位。像素（Pixel）。pt:绝对长度单位。点（Point）。1in = 2.54cm = 25.4 mm = 72pt = 6pc具体换算是：Points Pixels Ems Percent6pt 8px 0.5em 50%7pt 9px 0.55em 55%7.5pt 10px 0.625em 62.5%8pt 11px 0.7em 70%9pt 12px 0.75em 75%10pt 13px 0.8em 80%10.5pt 14px 0.875em 87.5%11pt 15px 0.95em 95%12pt 16px 1em 100%13pt 17px 1.05em 阅读全文