输入框去掉边框
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style type="text/css">
.username{
border:0 none;// 去掉边框
outline-style: none;//去掉轮廓线
}
</style>
</head>
<body>
mingzi:<input type="text" class="username">
mingzi:<input type="text" class="username111">
</body>
</html>
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