.llamagratis .button {
    font-family: "Montserrat";
    transition: all 0.3s;
    display: inline-block;
    padding: 4px 6px;
    color: #43AA00;
    font-size: 14px;
    text-align: center;
    background-color: #ffffff;
    border: 2px solid #43AA00;
    border-radius: 4px;
    cursor: pointer;
    min-width: 140px;
    font-weight: bold;
    width: 100%;
    margin-top: 0px;
}

@media screen and (min-width: 981px) {
    footer .column.is-3-desktop {
        flex: none;
        width: 25% !important;
    }
}