.dex-float {
    position: fixed;
    right: 20px;
    bottom: 20px;
    top: auto;
    height: auto;
    width: auto;
    z-index: 999;
    padding: 0;
    background: transparent;
    border: none;
    box-shadow: none;
    line-height: 0;
}

.dex-float img {
    width: 60px;
    height: auto;
    display: block;
    filter: drop-shadow(0 8px 12px rgba(0, 0, 0, 0.35));
}

@media (max-width: 768px) {
    .dex-float {
        right: 12px;
        bottom: 20px;
        top: auto;
    }

    .dex-float img {
        width: 60px;
    }
}