Webleb - Snippets de Código - Estrutura HTML de animação de carregamento CSS

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

body {
        background:url("./thumb.jpg") no-repeat center center;
        background-color: black;
        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;
    }

.loading-element {
        position: absolute;
        width: 50px;
        height: 50px;
        border-radius: 50%;
        animation: loading-animation 1s linear infinite;
    }

@keyframes loading-animation {
        0% { transform: scale(1); }
        25% { transform: scale(1.1); }
        50% { transform: scale(0.9); }
        75% { transform: scale(1.05); }
        100% { transform: scale(1); }
    }

.elemento1 {
        position: absolute;
        width: 100px;
        height: 100px;
        background-color: #fff;
        animation: elemento1-animate 2s ease-in-out;
    }

@keyframes elemento1-animate {
        0% { transform: translate(0, 0); }
        25% { transform: translate(100px, 0); }
        50% { transform: translate(-50px, 100px); }
        75% { transform: translate(100px, -50px); }
        100% { transform: translate(0, 0); }
    }

.elemento2 {
        position: absolute;
        width: 100px;
        height: 100px;
        background-color: #eee;
        animation: elemento2-animate 3s ease-in-out;
    }

@keyframes elemento2-animate {
        0% { transform: translate(0, 0); }
        25% { transform: translate(150px, 0); }
        50% { transform: translate(-75px, 150px); }
        75% { transform: translate(150px, -75px); }
        100% { transform: translate(0, 0); }
    }

/* A sensação de espera, como se o tempo tivesse parado. */
    .loading-element:after {
        content: '';
        position: absolute;
        width: 50px;
        height: 50px;
        border-radius: 50%;
        animation: loading-animation-infinite 1s linear infinite;
        background-color: #333;
        opacity: 0.5;
    }

@keyframes loading-animation-infinite {
        0% { transform: scale(1); }
        25% { transform: scale(1.1); }
        50% { transform: scale(0.9); }
        75% { transform: scale(1.05); }
        100% { transform: scale(1); }
    }

/* Os elementos se deslocam e se reorganizam, como se estivessem sendo influenciados por alguma força externa. */
    .elemento1::after {
        content: '';
        position: absolute;
        width: 50px;
        height: 50px;
        background-color: #fff;
        animation: elemento1-animate-infinite 2s ease-in-out;
    }

@keyframes elemento1-animate-infinite {
        0% { transform: translate(0, 0); }
        25% { transform: translate(100px, 0); }
        50% { transform: translate(-50px, 100px); }
        75% { transform: translate(100px, -50px); }
        100% { transform: translate(0, 0); }
    }

.elemento2::before {
        content: '';
        position: absolute;
        width: 50px;
        height: 50px;
        background-color: #eee;
        animation: elemento2-animate-infinite 3s ease-in-out;
    }

@keyframes elemento2-animate-infinite {
        0% { transform: translate(0, 0); }
        25% { transform: translate(150px, 0); }
        50% { transform: translate(-75px, 150px); }
        75% { transform: translate(150px, -75px); }
        100% { transform: translate(0, 0); }
    }

/* A sensação de espera se mistura com a incerteza, como se alguma coisa estivesse prestes a acontecer. */
    .elemento1::before {
        content: '';
        position: absolute;
        width: 50px;
        height: 50px;
        background-color: #ccc;
        animation: elemento1-animate-infinite-2 2s ease-in-out;
    }

@keyframes elemento1-animate-infinite-2 {
        0% { transform: translate(0, 0); }
        25% { transform: translate(100px, 0); }
        50% { transform: translate(-50px, 100px); }
        75% { transform: translate(100px, -50px); }
        100% { transform: translate(0, 0); }
    }

.elemento2::after {
        content: '';
        position: absolute;
        width: 50px;
        height: 50px;
        background-color: #fff;
        animation: elemento2-animate-infinite-2 3s ease-in-out;
    }

@keyframes elemento2-animate-infinite-2 {
        0% { transform: translate(0, 0); }
        25% { transform: translate(150px, 0); }
        50% { transform: translate(-75px, 150px); }
        75% { transform: translate(150px, -75px); }
        100% { transform: translate(0, 0); }
    }

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HTML

CSS

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

.loading-element {
        position: absolute;
        width: 50px;
        height: 50px;
        border-radius: 50%;
        animation: loading-animation 1s linear infinite;
    }

.elemento1 {
        position: absolute;
        width: 100px;
        height: 100px;
        background-color: #fff;
        animation: elemento1-animate 2s ease-in-out;
    }

.elemento2 {
        position: absolute;
        width: 100px;
        height: 100px;
        background-color: #eee;
        animation: elemento2-animate 3s ease-in-out;
    }