section#product-download {
    position: relative;
    overflow: hidden;
}

section#product-download span.arrow-indicator {
    position: absolute;
    width: 20px;
    height: 20px;
    background: white;
    bottom: -10px;
    left: 50%;
    margin-left: -10px;
    transform: rotate(45deg);
    box-shadow: 0 0 3px 2px #00000030;
}