.alert-block {
    display: -webkit-flex;
    display: -moz-flex;
    display: -ms-flex;
    display: -o-flex;
    display: flex;
    -webkit-flex-direction: column;
    -moz-flex-direction: column;
    -ms-flex-direction: column;
    -o-flex-direction: column;
    flex-direction: column;
    -ms-align-items: center;
    align-items: center;
    margin-bottom: 25px;
}

.alert {
    padding: 5px;
    background: #d84231;
    color: white;
    display: inline-block;
    text-align: center;
    margin-bottom: 5px;
}