.download-buttons li a img {
    height: 50px;
    width: auto;
    margin-right: 5px;
    margin-bottom: 5px;
}

.download-buttons {
    display: block;
    list-style: none;
    margin: 0;
    padding: 0;
    margin-top: 25px;
}

.download-buttons li {
    display: inline-block;
    list-style: none;
    margin: 0;
    padding: 0;
}

.download-buttons li a {
    display: inline-block;
}