I made pretty similar styling. Didn't know for this one.
Demo: https://etforum.freeflarum.com/
So here is code:
body::-webkit-scrollbar {
width: 0.3em;
}
body::-webkit-scrollbar-track {
-webkit-box-shadow: inset 0 0 6px rgba(0,0,0,0.3);
background-color: white;
}
body::-webkit-scrollbar-thumb {
background-color: purple;
outline: 1px solid slategrey;
}
body{
background: url("http://www.technocrazed.com/wp-content/uploads/2015/12/HD-purple-wallpaper-image-to-use-as-background-14.jpg");
background-size:cover;
background-attachment:fixed;
background-position: center center;
background-repeat:no-repeat;
}
.Hero{
background-color: rgba(255, 255, 255, 0.35);
border-radius: 5px;
}
h3, a{
color:black !important;
}
.App-content {
background-color: rgba(255, 255, 255, 0.8);
max-width: 1200px;
margin: 20px auto;
border-radius: 5px;
}
.DiscussionPage-discussion > .container {
min-height: 530px;
}
.App:before{
background-color: rgba(255, 255, 255, 0.9);
}
.UserPage{
border-radius: 5px;
}
.PostStream-item{
border-bottom:1px solid #e5aaff !important;
}
.DiscussionListItem:hover{
background-color:#e0beff;
}
.Scrubber-handle{
background:none;
}
For color themes i used: highlight color : RGB(77, 0, 96), and for second color: RGB(106, 10, 148)
I hope this will be helpful for someone ?.