Testing this fo rfun by as1

/* ==UserStyle==
@name         Mopaiv Anime Theme
@version      20220402.23.32
@namespace    userstyles.world/user/bloooooopwada
@description  Not perfect but its better than light mode its like a galaxy theme.

(Note that user index did most the coding  this is just a re-edit of index dark theme)
@author       bloooooopwada
@license      No License
==/UserStyle== */

/* ==UserStyle==
@name         Mopaiv Unofficial Dark Theme
@version      20220319.00.50
@namespace    userstyles.world/user/indexgit01
@description  Ever want to turn off the light switch for Mopaiv.com? Well now you can, EARLY! Mopaiv's official dark theme is not released yet, so I decided I'll release this for now.

Affects:
- Mopaiv.com & it's subdomains
@author       indexgit01
@license      No License
==/UserStyle== */

@-moz-document domain("mopaiv.com") {
:root {
    --main-bg-color: #000;
    --main-text-color: #fff;
    --secondary-text-color: #fff;
    --main-element-bg-color: #2270a9;
    --secondary-element-bg-color: #2270a9;
    --secondary2-element-bg-color: #2270a9;
    --third-element-bg-color: #2270a9;
    --mopaiv-blue: #2270a9;
}

body,
html 
  {
    background: url(https://imgur.com/gallery/U3jYf.jpeg);
    background-size: cover;
  }

  .appMount-3lHmkl
  {
    background: rgba(225, 225, 225, .6);
  }


p.text-center {
    color: var(--main-text-color);
}

.navbar {
    background-color: var(--main-element-bg-color);
    border-bottom: 1px solid rgba(0, 0, 0, .125);
}

.card {
    background-color: var(--main-element-bg-color);
}

.landing-header {
    background-color: var(--secondary-element-bg-color) !important;
}

.card * {
    color: var(--main-text-color);
}

.text-muted,
.text-truncate {
    color: var(--secondary-text-color);
}

#tabName,
h1,
h2,
h3,
h4,
h5,
h6 {
    color: var(--main-text-color);
}

.nav-pills .nav-link,
.nav-pills .nav-link:hover,
.nav-pills .nav-link:focus {
    background-color: var(--main-element-bg-color);
    color: var(--main-text-color);
}

.card .nav-pills .nav-link:hover {
    background-color: var(--secondary-element-bg-color);
    color: var(--main-text-color);
}

.nav-pills .nav-link.active,
.nav-pills .nav-link.active:hover,
.nav-pills .nav-link.active:focus {
    background-color: var(--mopaiv-blue);
    color: var(--main-text-color);
}

.img-holder,
.card-top,
.card .card-top {
    background-color: var(--secondary-element-bg-color) !important;
}

.form-control,
.form-control:hover,
.form-control:focus {
    background-color: var(--main-element-bg-color);
    border-color: #000;
}

.card .form-control,
.card .form-control:hover,
.card .form-control:focus {
    background-color: var(--secondary-element-bg-color);
    border-color: #000;
}

.form-control,
.form-control:focus {
    color: var(--main-text-color);
}

.form-control::placeholder {
    color: var(--secondary-text-color);
}

a {
    color: var(--secondary-text-color) !important;
}

a:hover,
a:focus {
    color: var(--main-text-color);
}

.col-md.text-center-sm.align-self-center.hide-sm span,
.col-md.text-center-sm.align-self-center span {
    color: var(--secondary-text-color);
}

.nav-item a:hover,
.nav-item a:focus {
    background-color: var(--secondary-element-bg-color) !important;
}

.border-right,
.border-left {
    border-color: #111 !important;
}

.nav-item.dropdown .dropdown-menu {
    background-color: var(--main-element-bg-color);
    border: .1px solid #000;
}

.dropdown-menu {
    box-shadow: 0 8px 8px -4px var(--main-element-bg-color);
    /*box-shadow: 0 3px 10px var(--main-element-bg-color); */
}

.dropdown-divider {
    border-color: #000;
}

hr {
    border-color: #111;
}

.details,
.copyright,
.socials i {
    color: var(--secondary-text-color) !important;
}

.copyright:after {
    content: "Dark theme made by Index.";
    display: block;
}

.modal-content {
    border-color: var(--main-element-bg-color);
}

.modal-body {
    background-color: var(--secondary-element-bg-color);
}

.modal-header,
.modal-footer {
    background-color: var(--main-element-bg-color);
    border-color: var(--main-element-bg-color);
}

.col-md-2.text-center.text-truncate.hide-sm,
.col-md-6.text-truncate {
    color: var(--main-text-color);
}

.input-group-text {
    background-color: var(--secondary2-element-bg-color);
    border-color: #fff;
}

.card[style="border-left:5px solid #1890ff;box-shadow:none;"] {
    background-color: var(--main-bg-color);
}

.alert a {
    color: var(--mopaiv-blue) !important;
}

div[style="color:inherit;font-size:20px;font-weight:600;"],
h4[style="color:inherit;font-size:20px;font-weight:600;"] {
    color: var(--secondary-text-color) !important;
}

pre[style="word-wrap: break-word; white-space: pre-wrap;"] {
    color: var(--main-text-color);
}
}