Any one can help me to add base url to my background image path in my external css. My code like below.
PHP Code:
aside.main-sidebar{
background-image: linear-gradient(90deg, rgba(0,0,0,0.4), rgba(0, 0, 0, 0.2)),
url(/ui/assets/img/bg4.jpg) !important;
background-size: cover;
background-position: center;
}