:focus{
    outline: 4px solid grey;
}
.off:focus {
    outline: none;
}
.on:focus{
    outline: 2px solid green
}
.red:focus {
    outline: 4px solid red
}
.green:focus {
    outline: 4px solid green
}
.blue:focus {
    outline: 4px solid blue
}
.thin:focus {
    outline: 2px solid grey
}
.reg:focus {
    outline: 4px solid grey
}
.thick:focus {
    outline: 6px solid grey
}