<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=0"/>
<link href='https://fonts.googleapis.com/css?family=Niramit' rel='stylesheet'>
<link href="https://fonts.googleapis.com/css?family=Nunito" rel="stylesheet">
<link rel="stylesheet" href="styles/normalize.css">
<link rel="stylesheet" href="styles/style.css">
</head>
<body>
<div id="main">
<div class="bar">
<div id="title" class="header-text">title</div>
</div>
</div>
</body>
</html>
https://jsfiddle.net/uey85nbj/
Chrome桌面:上方27像素,下方29像素
Chrome移动设备:上方40像素,下方31像素