body {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    margin: 0;
    font-family: 'Lato';
    font-weight: 300;
    font-size: 24px;
    background: #2b2b2b;
    color: white;
}

h2 {
    display: block;
    font-weight: 100;
    text-align: center;
}

.mosaic-loader {
    --cells: 4;
    --cell-spacing: 1vmin;
    --border-width: 1px;
    --cell-size: calc((100vmin - (var(--cells) - 1) * var(--cell-spacing)) / var(--cells) - 2 * var(--cell-spacing));
    --total-size: calc(var(--cells) * (var(--cell-size) + 2 * var(--cell-spacing)));
    display: flex;
    flex-wrap: wrap;
    width: var(--total-size);
    height: var(--total-size);
}

.cell {
    --cell-color: white;
    flex: 0 0 var(--cell-size);
    margin: var(--cell-spacing);
    background-color: transparent;
    box-sizing: border-box;
    border: var(--border-width) solid var(--cell-color);
    animation: 6.5s ripple ease infinite;
}

.cell.d-1 {
    animation-delay: 100ms;
}

.cell.d-2 {
    animation-delay: 200ms;
}

.cell.d-3 {
    animation-delay: 300ms;
}

.cell.d-4 {
    animation-delay: 400ms;
}

.cell.d-5 {
    animation-delay: 500ms;
}

.cell.d-6 {
    animation-delay: 600ms;
}

.cell.d-7 {
    animation-delay: 700ms;
}

.cell.d-8 {
    animation-delay: 800ms;
}

.cell.d-9 {
    animation-delay: 900ms;
}

.cell.d-10 {
    animation-delay: 1000ms;
}

.cell.d-11 {
    animation-delay: 1100ms;
}

.cell.d-12 {
    animation-delay: 1200ms;
}

.cell.d-13 {
    animation-delay: 1300ms;
}

.cell.d-14 {
    animation-delay: 1400ms;
}

.cell.d-15 {
    animation-delay: 1500ms;
}

.cell.d-16 {
    animation-delay: 1600ms;
}

.cell:nth-child(1) {
    --cell-color: #d4aee0;
}

.cell:nth-child(2) {
    --cell-color: #8975b4;
}

.cell:nth-child(3) {
    --cell-color: #64518a;
}

.cell:nth-child(4) {
    --cell-color: #565190;
}

.cell:nth-child(5) {
    --cell-color: #44abac;
}

.cell:nth-child(6) {
    --cell-color: #2ca7d8;
}

.cell:nth-child(7) {
    --cell-color: #1482ce;
}

.cell:nth-child(8) {
    --cell-color: #05597c;
}

.cell:nth-child(9) {
    --cell-color: #b2dd57;
}

.cell:nth-child(10) {
    --cell-color: #57c443;
}

.cell:nth-child(11) {
    --cell-color: #05b853;
}

.cell:nth-child(12) {
    --cell-color: #19962e;
}

.cell:nth-child(13) {
    --cell-color: #fdc82e;
}

.cell:nth-child(14) {
    --cell-color: #fd9c2e;
}

.cell:nth-child(15) {
    --cell-color: #d5385a;
}

.cell:nth-child(16) {
    --cell-color: #911750;
}

@keyframes ripple {
    0% {
        background-color: transparent;
    }

    30% {
        background-color: var(--cell-color);
    }

    60% {
        background-color: transparent;
    }

    100% {
        background-color: transparent;
    }
}