div.sharedaddy {
     -webkit-filter: grayscale(100%) !important;
    filter: grayscale(100%) !important;
    text-align: center !important;
}

#mc_embed_signup input.button {
    width:90% !important;
background-color: #ffa500 !important;
}

#mc_embed_signup input.email {
    width:90% !important;
}