<title>W3Cschool教程(w3cschool.cn)</title>
background: -webkit-linear-gradient(0deg, red, blue);
background: -o-linear-gradient(0deg, red, blue);
background: -moz-linear-gradient(0deg, red, blue);
background: linear-gradient(0deg, red, blue);
background: -webkit-linear-gradient(90deg, red, blue);
background: -o-linear-gradient(90deg, red, blue);
background: -moz-linear-gradient(90deg, red, blue);
background: linear-gradient(90deg, red, blue);
background: -webkit-linear-gradient(180deg, red, blue);
background: -o-linear-gradient(180deg, red, blue);
background: -moz-linear-gradient(180deg, red, blue);
background: linear-gradient(180deg, red, blue);
background: -webkit-linear-gradient(-90deg, red, blue);
background: -o-linear-gradient(-90deg, red, blue);
background: -moz-linear-gradient(-90deg, red, blue);
background: linear-gradient(-90deg, red, blue);
<div id="grad1" style="color:white;text-align:center;">0deg</div><br>
<div id="grad2" style="color:white;text-align:center;">90deg</div><br>
<div id="grad3" style="color:white;text-align:center;">180deg</div><br>
<div id="grad4" style="color:white;text-align:center;">-90deg</div>
<p><strong>注意:</strong> Internet Explorer 9 及之前的版本不支持渐变。</p>