Widgets with rounded corners

[khalil]

Hello Dears, 
Could I change the widget to rounded corner via CSS or JS?

[Daniel]

Try this

Code:

.layer.layer-centered.layer-widget{
    border-radius: 20px; !important;
}

[khalil]

Try this

Code:

.layer.layer-centered.layer-widget{
    border-radius: 20px; !important;
}

Work Perfect 
Thank you