button {
    padding: 15px 35px 10px;
    color: #FFF;
    text-transform: uppercase;
    letter-spacing: 1px;
    display: inline-block;
    margin: 30px 0 0;
    font-weight: bold;
    border: 0;
}
button:hover {
    /*    background-color: #b0bec5;
        color:#f7f9fb;*/
    -webkit-transition: all .1s ease-out;
    -moz-transition: all .1s ease-out;
    -o-transition: all .1s ease-out;
    transition: all .1s ease-out;
}
button i {
    font-size: 18px;
    padding-right: 3px;
    vertical-align: middle;
}