.facebook-login-block .buttons .facebook-btn {
    width: 100%;
    color: white;
    font-family:Arial, Helvetica, sans-serif;
    font-size: 14px;
    font-weight: bold;
    margin: 0 auto;
    position: relative;
    background: #4267b2;
}
.facebook-login-block .buttons .facebook-btn .facebook-anchor {
    background-image: url('images/facebook-signing.png');
    background-repeat: no-repeat;
    background-position-x: 10px;
    background-position-y: 50%;
    padding: 15px 15px 15px 40px;
    position: relative;
    height: inherit;
    display: inline-block;
    width: 100%;
    max-width: inherit;
    height: 100%;
    overflow-wrap: break-word;
}
.facebook-login-block .buttons .facebook-btn .facebook-anchor:hover {
    background-color: #2b59b7;
}
.facebook-login-block .buttons .facebook-btn .facebook-anchor:active {
    background-color: #2b59b7;
}