Фон стандартного шаблона - Joomla 4 и Joomla 5: Общие вопросы

body {
  background: url("../images/kletka.png") repeat-y;
}

    body {
  background: url("../images/kletka.png")!important;
}  

view-source:http://sergeybob.kiev.ua/en/

http://sergeybob.kiev.ua/images/kletka.png

user.css:1          GET http://sergeybob.kiev.ua/en/media/templates/site/cassiopeia/images/kletka.png 404 (Not Found)

body {

    background: url(/images/kletka.png)!important;
}

:root {
  --cassiopeia-color-primary: hsl(170deg, 70%, 40%);
  --cassiopeia-color-link: hsl(220deg, 67%, 40%);
  --cassiopeia-color-hover: hsl(242deg, 30%, 36%);
}

.back-to-top-link {
  position: absolute;
  inset-inline-end: 1rem;
  bottom: 1rem;
  z-index: 10000;
  padding: 0.5em;
  color: var(--cassiopeia-color-primary, hsl(170deg, 70%, 40%));
  pointer-events: all;
  background-color: var(--white, hsl(0deg, 0%, 100%));
  border: 1px solid var(--cassiopeia-color-primary, hsl(170deg, 70%, 40%));
  border-radius: 0.25rem;
  opacity: 0;
  -webkit-transition: opacity 200ms ease-in;
  -o-transition: opacity 200ms ease-in;
  transition: opacity 200ms ease-in;
}

.back-to-top-link {
  color: var(--cassiopeia-color-primary, hsl(170deg, 70%, 40%));
  border: 1px solid var(--cassiopeia-color-primary, hsl(170deg, 70%, 40%)); 
}