Extrait d'animation de chargement CSS

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HTML

CSS

/* css_foundation */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

body {
            background:url("./thumb.jpg") no-repeat center center;
            background-color: #000;
            background-size: cover;
            display: flex;
            align-items: center;
            justify-content: center;
            height: 100vh;
            overflow: hidden;
        }

.codigo {
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            background: #272822;
            color: #F8F8F2;
            font-family: 'Consolas', 'Monaco', monospace;
            font-size: 18px;
            padding: 20px;
            border-radius: 8px;
            white-space: pre-line;
            text-align: left;
            line-height: 1.6;
            max-height: 25%;
            max-width: 75%;
            width: 75%;
            height: 25%;
            top:15%;
            overflow-y: hidden;
             box-shadow: -8px 10px 18px rgba(0, 0, 0, 0.55);
        }

.selector       { color: #F92672; }
        .property       { color: #66D9EF; }
        .value-number   { color: #AE81FF; }
        .value-string   { color: #E6DB74; }
        .value-color    { color: #A6E22E; }
        .function       { color: #A6E22E; }

.animation-container {
            position: absolute;
            top: 75%;
            left: 50%;
            transform: translate(-50%, -50%);
            display: flex;
            align-items: center;
            justify-content: center;
            width: 100%;
            height: 50%;
            overflow: hidden;
            background: transparent;
        }

/* animation */
        .loading-element {
            position: relative;
            width: 100px;
            height: 100px;
            border-radius: 50%;
            /* criar uma sensação de realidade distorcida */
            animation: loading-animation 1s linear infinite;
        }
        @keyframes loading-animation {
            0% {
                border-radius: 50%;
                transform: scale(1) rotate(0deg);
            }
            100% {
                border-radius: 50%;
                transform: scale(1.5) rotate(360deg);
            }
        }
        /* criar uma sensação de perda de controle */
        .loading-element::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(255, 0, 0, 0.5);
            mix-blend-mode: screen;
            border-radius: 50%;
            animation: loading-animation-2 1s linear infinite;
        }
        @keyframes loading-animation-2 {
            0% {
                transform: scale(1) rotate(0deg);
            }
            100% {
                transform: scale(0.5) rotate(360deg);
            }
        }
        /* criar uma sensação de desintegração */
        .loading-element::after {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 255, 0.5);
            mix-blend-mode: screen;
            border-radius: 50%;
            animation: loading-animation-3 1s linear infinite;
        }
        @keyframes loading-animation-3 {
            0% {
                transform: scale(1) rotate(0deg);
            }
            100% {
                transform: scale(0.5) rotate(360deg);
                opacity: 0;
            }
        }