add-to-cart-tweaks.css

.mkl_pc .mkl_pc_container span.screen-reader-text {
    display: none;
}
.mkl_pc .mkl_pc_container .mkl-pc-show-form svg {
    width: 30px;
    display: inline-block;
    vertical-align: middle;
}

.mkl_pc .mkl_pc_container .mkl_pc_toolbar section.choices > ul > li.roll-selection ul.layer_choices {
    display: block !important;
}

@media(max-width: 660px) {
    .mkl_pc .mkl_pc_container footer {
        height: 6em;
    }
    .mkl_pc .mkl_pc_container .mkl_pc_viewer {
        bottom: 6em;
    }

    .mkl_pc .mkl_pc_container .mkl-pc-show-form {
        display: block;
        width: calc(100% - 20px);
        margin: 10px;
        text-align: center;
        border: 2px solid #262626 !important;
    }
    .mkl_pc .mkl_pc_container .mkl-pc-show-form svg path {
        fill: #262626;
    }
    .mkl_pc .mkl_pc_container .mkl-pc-show-form span.screen-reader-text {
        display: inline-block;
        color: #262626;
        vertical-align: middle;
        padding-left: 10px;
        transform: translateY(2px);
    }

    .mkl_pc .mkl_pc_container .footer__section-right {
        width: 100%;
    }
}