botón de desactivación de estilo
button:disabled,
button[disabled]{
border: 1px solid #999999;
background-color: #cccccc;
color: #666666;
}
Xenophobic Xenomorph
button:disabled,
button[disabled]{
border: 1px solid #999999;
background-color: #cccccc;
color: #666666;
}/* CSS Selectors for CSS2 and CSS3 both */
button:disabled,
button[disabled]{
border: 1px solid #999999;
background-color: #cccccc;
color: #666666;
}<input type="text" name="username" value="admin" >
<style type="text/css">
input[name=username] {
pointer-events: none;
}
</style>