http://codepen.io/xiaozhuzhu77/pen/bNVZGg
<body>
<h1>颜色值aa</h1>
<h1>aaaaa</h1>
<h2>颜色值bb</h2>
<h3>颜色值cc</h3>
<h4>颜色值dd</h4>
</body>
body {
background-color: #000;
background-color: hsl(0,0%,78%);
}
h1 {
color: #37a;
text-transform: uppercase;
}
h2 {
color:#fff332;
text-transform: lowercase;
}
h3 {
color: #fff;
text-transform: capitalize;
}
h4 {
color: lightgreen;
text-transform: uppercase;
}`