Classic computer console theme for BreakDown: https://ugotsta.github.io/downslide/?css=a634da7b7130fd40d682360154cc4e2e

breakdown-console.css

/*
  Theme name: Console
  URL: https://gist.github.com/Ugotsta/a634da7b7130fd40d682360154cc4e2e
*/

@import url('https://fonts.googleapis.com/css?family=Cousine');

:root {
    --bg: green;
}

* {
    font-family: 'Cousine', monospace;
    text-shadow: 0 0 13px rgba(255,255,255,0.5);
    color: rgba(255,255,255,0.8);
}

.inner * {
  mix-blend-mode: overlay;
}

pre code, pre, .hljs, pre.hljs {
  background: none;
}

.info .app-title {
    color: white;
    text-shadow: 0px 1px 2px darkseagreen, 0 0 20px darkseagreen;
    text-transform: uppercase;
}

.section a {
    color: white;
}

.section .content,
.section .alternate {
    background: none;
}

#custom li {
    background: none;
}

#custom .section table,
#custom .section tr,
#custom .section th {
  background: none;
}

.section code {
    box-shadow: inset 0 0 60px rgba(255,255,255,0.2);
    filter: invert(100%); 
}

.section a.handle {
    font-family: 'Cousine', monospace;
    text-shadow: 0 0 8px rgba(255,255,255,0.95);
    color: white;
}

.section {
    background: none;
    border: none;
    box-shadow: none;
    z-index: 1;
}

.section.current {
    z-index: 2;
}

.inner::before {
    content: "";
    position: fixed;
    top: 0;
    bottom: 0;
    right: 0;
    left: 0;
    pointer-events: none;
    background: linear-gradient(45deg, rgba(14,14,14,1) 0%,rgba(78,92,90,1) 18%,rgba(130,157,152,1) 33%,rgba(142,166,162,1) 50%,rgba(153,175,171,1) 67%,rgba(174,191,188,1) 78%,rgba(216,224,222,1) 100%);
    box-shadow: inset 0 0 200px black;
    mix-blend-mode: overlay;
}

#bd-entwine .inner::before,
#bd-downslide .inner::before,
.bd-animated .inner::before {
/*     animation: line 3s linear infinite; */
}

@keyframes line {
    0% {
        background-position-y: -400px;
    }
    50% {
        background-position-y: 0px;
    }
    100% {
        background-position-y: 400px;
    }
}

.inner {
    background: none;
}

.inner::after {
    content: "";
    position: fixed;
    top: 0;
    bottom: 0;
    right: 0;
    left: 0;
    pointer-events: none;
    box-shadow: inset 0 0 150px black;
    background: linear-gradient( to bottom, #5d9634, #5d9634 50%, #538c2b 50%, #538c2b );
    background-size: 100% 6px;
    mix-blend-mode: hard-light;
    background-position-y: 0px;
    background-color: var(--bg);
    background-blend-mode: hard-light;
}

#bd-entwine .inner::after,
#bd-downslide .inner::after,
.bd-animated .inner::after {
    mix-blend-mode: color-burn;
}

#bd-entwine .inner::after,
#bd-downslide .inner::after,
.bd-animated .inner::after {
    animation: scan 1s linear infinite;
}

#bd-breakdown #custom .section {
    margin-top: 0;
    padding-top: 50px;
}

@keyframes scan {
    0% { background-position-y: 0px; }
    50% { background-position-y: 100px; }
    100% { background-position-y: 0px; }
}

.info {
    background: rgba(0,0,0,0.7);
    position: fixed;
    top: 0px;
    right: 0px;
    width: 300px;
    box-shadow: -2px 2px 8px rgba(0,0,0,0.5);
    padding: 10px;
    z-index: 100;
    mix-blend-mode: luminosity;
}

ul li {
    border-left: 6px solid rgba(0,0,0,0.05);
    margin: 0;
}

/* Animations */
@keyframes in {
    0% {
        opacity: 1;
        filter: blur(6px);
        mix-blend-mode: overlay;
        top: -50%;
        transform: perspective(300px) translateZ(100px) rotateX(280deg);
    }
    100% {
        opacity: 1;
        filter: blur(0px);
        mix-blend-mode: overlay;
        top: 0%;
        transform: perspective(300px) translateZ(0px) rotateX(360deg);
    }
}

@keyframes out {
    0% {
        opacity: 1;
        filter: blur(0px);
        mix-blend-mode: overlay;
        top: 0%;
        transform: perspective(300px) translateZ(0px) rotateX(0deg);
    }
    100% {
        opacity: 1;
        filter: blur(6px);
        mix-blend-mode: overlay;
        top: 100%;
        transform: perspective(200px) translateZ(100px) rotateX(80deg);
    }
}

@keyframes in-reverse {
    0% {
        opacity: 1;
        filter: blur(0px);
        mix-blend-mode: overlay;
        top: 0%;
        transform: perspective(300px) translateZ(0px) rotateX(360deg);
    }
    100% {
        opacity: 1;
        filter: blur(6px);
        mix-blend-mode: overlay;
        top: -50%;
        transform: perspective(300px) translateZ(100px) rotateX(280deg);
    }
}

@keyframes out-reverse {
    0% {
        opacity: 1;
        filter: blur(6px);
        mix-blend-mode: overlay;
        top: 100%;
        transform: perspective(200px) translateZ(100px) rotateX(80deg);

    }
    100% {
        opacity: 1;
        filter: blur(0px);
        mix-blend-mode: overlay;
        top: 0%;
        transform: perspective(300px) translateZ(0px) rotateX(0deg);
    }
}

/* Modular .bd-modular styles */

.bd-modular a.handle {
    color: black;
}

connection {
    mix-blend-mode: multiply;
}

.section.note {
    filter: invert(100%);
    box-shadow: inset 0 0 100px rgba(255,255,255,0.5);
}

.section a.n-reference {
    color: black;
}

/* EQ styles for BeatDown */

#bd-beatdown .eq {
    mix-blend-mode: soft-light;
    z-index: 1;
}

.eq .band {
    border-top: 3px solid rgba(255,255,255,0.65);
}

/* Mode-based styles */

#custom .bd-lyrics .section {
    filter: blur(6px);
}

#custom .bd-lyrics .section.current {
    filter: blur(0px);
}