您可以尝试运行以下代码以在CSS3中实现从左到右的渐变
<html>
<head>
<style>
#grad1 {
height: 100px;
background: -webkit-linear-gradient(left, red , blue);
background: -o-linear-gradient(right, red, blue);
background: -moz-linear-gradient(right, red, blue);
background: linear-gradient(to right, red , blue);
}
</style>
</head>
<body>
<div id = "grad1"></div>
</body>
</html>