Change image background on visited link

[System32]

So, I am trying to mimic the same vote system xenForo has. https://testaca.forumotion.me/t2-nbeka-nova-tema
I made it look similar but, I want once the link is clicked, to disable it from futher clicking and change the image of it. I use this code but it doesn't work:

.vote-up {
background:url(https://i.ibb.co/YjNSWrp/352469-arrow-up-icon.png) no-repeat;
  width:48px;
  height:48px;
}
.vote-down {
background:url(https://i.ibb.co/W2vZFWz/352466-arrow-down-icon.png) no-repeat;
  width:48px;
  height:48px;
}
.vote-up:visited {
background:url(https://i.ibb.co/BPZky6R/352469-arrow-up-icon.png)!important;
pointer-events:none;
}
.vote-down:visited {
  background:url(https://i.ibb.co/fDGQGDH/down.png)!important;
  pointer-events:none;
}

 

[Antero360]

So, I am trying to mimic the same vote system xenForo has. https://testaca.forumotion.me/t2-nbeka-nova-tema
I made it look similar but, I want once the link is clicked, to disable it from futher clicking and change the image of it. I use this code but it doesn't work:

.vote-up {
background:url(https://i.ibb.co/YjNSWrp/352469-arrow-up-icon.png) no-repeat;
  width:48px;
  height:48px;
}
.vote-down {
background:url(https://i.ibb.co/W2vZFWz/352466-arrow-down-icon.png) no-repeat;
  width:48px;
  height:48px;
}
.vote-up:visited {
background:url(https://i.ibb.co/BPZky6R/352469-arrow-up-icon.png)!important;
pointer-events:none;
}
.vote-down:visited {
  background:url(https://i.ibb.co/fDGQGDH/down.png)!important;
  pointer-events:none;
}

Not as simple as you think it is lol. You're gonna need some js involved too. There is no easy way to check if a link has been previously clicked, so a bit of hackery is needed. First, you're gonna want to check if the link itself has changed colors, look for the purple color a link is set to after being clicked, then if so, you are gonna want to add your css to the class list of that link, and remove the href attribute in order to disable it.

 

[System32]

Not as simple as you think it is lol. You're gonna need some js involved too. There is no easy way to check if a link has been previously clicked, so a bit of hackery is needed. First, you're gonna want to check if the link itself has changed colors, look for the purple color a link is set to after being clicked, then if so, you are gonna want to add your css to the class list of that link, and remove the href attribute in order to disable it.

But wait. Why they have selector :visited if it doesn't work? Okay, I turned from image to material icon. So, i think it is easier for me to change opacity, right? But for some reason it still doesn't work.