picture.is-loaded img {
    animation: fadeIn 0.38s linear 1s forwards;
}

picture.is-loading {
    position: relative;
}

picture.is-loading:after {
    content: '';
    display: block;
    color: #ddd;
    font-size: 30px;
    text-indent: -9999em;
    overflow: hidden;
    width: 1em;
    height: 1em;
    border-radius: 50%;
    margin: auto;
    position: relative;
    top: 50%;
    left: 0;
    transform: translateZ(0);
    animation: loading 1.5s infinite ease;
}

@keyframes loading {
    0% {
        transform: rotate(0deg);
        box-shadow: 0 -0.83em 0 -0.4em, 0 -0.83em 0 -0.42em, 0 -0.83em 0 -0.44em, 0 -0.83em 0 -0.46em, 0 -0.83em 0 -0.477em;
    }

    5%,
    95% {
        box-shadow: 0 -0.83em 0 -0.4em, 0 -0.83em 0 -0.42em, 0 -0.83em 0 -0.44em, 0 -0.83em 0 -0.46em, 0 -0.83em 0 -0.477em;
    }

    10%,
    59% {
        box-shadow: 0 -0.83em 0 -0.4em, -0.087em -0.825em 0 -0.42em, -0.173em -0.812em 0 -0.44em, -0.256em -0.789em 0 -0.46em, -0.297em -0.775em 0 -0.477em;
    }

    20% {
        box-shadow: 0 -0.83em 0 -0.4em, -0.338em -0.758em 0 -0.42em, -0.555em -0.617em 0 -0.44em, -0.671em -0.488em 0 -0.46em, -0.749em -0.34em 0 -0.477em;
    }

    38% {
        box-shadow: 0 -0.83em 0 -0.4em, -0.377em -0.74em 0 -0.42em, -0.645em -0.522em 0 -0.44em, -0.775em -0.297em 0 -0.46em, -0.82em -0.09em 0 -0.477em;
    }

    100% {
        transform: rotate(360deg);
        box-shadow: 0 -0.83em 0 -0.4em, 0 -0.83em 0 -0.42em, 0 -0.83em 0 -0.44em, 0 -0.83em 0 -0.46em, 0 -0.83em 0 -0.477em;
    }
}

@keyframes fadeIn {
    0% {
        opacity: 0;
    }

    50% {
        opacity: 0.5;
    }
    
    100% {
        opacity: 1;
    }
}