.psob-sms-btn {
    display: block !important;
    width: 100%;
    text-align: center;
    background: #2e7d32;
    color: #fff !important;
    border:none !important;
    padding: 5px;
    border-radius: 6px;
    margin-top: 5px;
    font-size: 13px;
    text-decoration: none;
    z-index: 9999 !important;
}