.alert {
    padding: 15px;
    margin-bottom: 20px;
    border: 1px solid transparent;
    border-radius: 4px;
    font-size: 14px;
}
.alert.success {
    color: #3c763d;
    background-color: #dff0d8;
    border-color: #d6e9c6;
}
.alert.warning {
    color: #8a6d3b;
    background-color: #fcf8e3;
    border-color: #faebcc;
}
.alert.danger {
    color: #a94442;
    background-color: #f2dede;
    border-color: #ebccd1;
}