spring-security/css/buttons.css.css

.btn.btn-black {
    background-color: #34302d;
    background-image: none;
    border-radius: 0;
    color: #f1f1f1;
    font-size: 14px;
    line-height: 14px;
    font-family: "Montserrat", sans-serif;
    border: 2px solid #6db33f;
    padding: 21px 60px;
    text-shadow: none;
    transition: border 0.15s;
    -webkit-transition: border 0.15s;
    -moz-transition: border 0.15s;
    -o-transition: border 0.15s;
    -ms-transition: border 0.15s;
}

.btn.btn-black.sub-text {
    padding: 12px 0;
}

.btn.btn-black.sub-text p {
    margin-top: 6px;
    color: #eeeeee;
    font-size: 14px;
    line-height: 14px;
    font-family: "Montserrat", sans-serif;
    text-transform: none;
}

.btn.btn-black:hover {
    border-color: #34302d;
    box-shadow: none;
    text-decoration: none;
}

.btn.btn-black:active {
    box-shadow: inset 0 3px 6px #0b0a0a;
    border-color: #34302d;
}

.btn.uppercase {
    text-transform: uppercase;
}