CSS定义input disabled样式的三种方法

input:disabled{
    border: 1px solid #DDD;
    background-color: #F5F5F5;
    color:#ACA899;opacity: 1;
}
//IE8-
input[disabled]{
    border: 1px solid #DDD;
    background-color: #F5F5F5;
    color:#ACA899;opacity: 1;
}
//IE6 Using Javascript to add CSS class "disabled"
* html input.disabled{
    border: 1px solid #DDD;
    background-color: #F5F5F5;
    color:#ACA899;opacity: 1;
}

当设置disabled属性后，默认opacity: 0.3;