.alert-header-message {
    background-color: #dfdfdf;
    color: #000000;
    border:0px;
    border-radius: 0px;
    padding: 10px;
    margin-bottom: 0px;
    font-weight: bold;
}

.alert-header-message .close, button.close 
{
    float: left;
    color: #000000;
    font-size: 18px !important;
    font-weight: bold !important;
}