Animación de alternancia de triángulos CSS

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Animación de alternancia de triángulos CSS

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Un código de ashimadison8

HTML

CSS

*{
    margin: 0;
    padding: 0;
    }
  
    .triangle-container{
    background: linear-gradient(45deg,rgba(139,69,19,0.1) 2%, transparent 3%, transparent 7%,rgba(139,69,19,0.1) 8%),radial-gradient(ellipse at center, rgba(255,255,255,0.2) 0%, transparent 70%),linear-gradient(90deg, #8B4513 0%, #A0522D 50%, #CD853F 100%);
    background-blend-mode: overlay;
    background-size: cover;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100vw;
    height: 100vh;
    font-family: monospace;
    overflow: hidden;
    }
   
    .ellipse2{
    position: absolute;
    left: 5px;
    width: 20px;
    height: 100px;
    background: linear-gradient(to right, #808080, #A9A9A9, #808080);    
    border-radius: 50%;
    transform: rotate(15deg);

}

.mid{
    position: absolute;
    align-self: center;
    top: 43%;
    width: 0;
    height: 0;
    border-left: 25px solid transparent;
    border-right: 25px solid transparent;
    border-bottom: 90px solid gray;}

.ellipse3{

position: absolute; right: 5px;
    width: 20px;
    height: 100px;
    background: linear-gradient(to left, #808080, #A9A9A9, #808080);
    border-radius: 50%;
    transform: rotate(-15deg);}
    
    .cabe{

width: 2px;
    height: 500px;
    position: absolute;
    align-self: center;
    top: -50px;
    background-color: rgb(0, 0, 0);}

.hole{

align-self: center;
    background: black;
    width: 65px;
    height: 34px;
    border-radius: 50%;
    position: absolute;
    top: 54%;}
  
    .transform-element{
    position: absolute;
    background-color: transparent;
    height: 96vh;
    width: 60px;
    display: flex;
    justify-content: center;
    align-items: center;
    transform-origin: top;
    animation: animarLampada 5s linear infinite;
    }

.toggle{
    position: absolute; top: 66%;
    left: 56%;
    background: white;
    width: 25px;
    height: 25px;
    border-radius: 50%;
    color: black;
    display: flex;
    flex-direction: column;
    justify-content: center; align-items: center; font-family: monospace; cursor: default;
    user-select: none;
    }
    /* usando o active para evitar o js */
    .toggle:active{
    background:
    rgb(232, 232, 232);

box-shadow: inset 1px 2px black;
    }
    /*acender a luz usando o interruptor sem javascript */
    .toggle:active ~ .transform-element .hole{
    background: goldenrod;
    box-shadow: 0 20px 40px 4px goldenrod;
    }
    /*animação simples */
    @keyframes animarLampada{

0%, 100%{transform:rotate(-2deg);
    }
    50%{transform:rotate(2deg);}}