详解rgba兼容性处理方法

    
        
        
        
    


    
        

            rgba
        
    

.parent {
                width: 400px;
                height: 400px;
                margin: 100px;
                font-size: 20px;
                color: #FF0000;
                border: 1px solid red;
                background: rgba(0, 0, 0, 0.5);
                /*下一句关键设置*/
                filter: progid:DXImageTransform.Microsoft.gradient(startcolorstr=#7f000000, endcolorstr=#7f000000);
            }