how to change nabar toggler icon with svg icon code example

Example: customize navbar-toggler-icon

// this is a black icon with 50% opacity .navbar-light .navbar-toggler-icon {    background-image: url(“data:image/svg+xml;..”); } // this is a white icon with 50% opacity .navbar-dark .navbar-toggler-icon {    background-image: url(“data:image/svg+xml;..”); }