似乎您需要显式设置字体，
line-height并
height根据需要更改和。假设“ Times New Roman”是浏览器的默认字体：
span { display: inline-block; font-size: 50px; background-color: green; font-family: 'Times New Roman'; line-height: 34px; height: 35px;}<link href='http://fonts.googleapis.com/css?family=Tinos' rel='stylesheet' type='text/css'><span> BIG TEXT</span>
