.pes-pdf-scrollable--viewer {
    overflow-y: scroll;
    position: relative;
}

.pes-pdf-scrollable--viewer canvas {
    width: 100%;
    display: block;
}

.pes-pdf-scrollable-loader {
    width: 50px;
    height: 50px;
    border: 4px solid #ddd;
    border-top-color: #000;
    border-radius: 50%;
    animation: pesSpin 1s linear infinite;
    margin: 40px auto;
}

@keyframes pesSpin {
    to {
        transform: rotate(360deg);
    }
}

.pes-pdf-scrollable--dark {
    background: #111;
}

.pes-pdf-scrollable--dark canvas {
    filter: brightness(.9);
}

@media (max-width: 767px) {

    .pes-pdf-scrollable--viewer {
        overflow-x: auto;
    }

}