.container{
    width: 600px;
    margin: 0 auto;
}

.container>div{
    margin-top: 30px;
}

.success{
    background-color: #4caf50;
}

.info {
    background-color: #2196F3;
}

.danger {
    background-color: #f44336;
}

.warning {
    background-color: #ff9800;
}

h3{
    font-size: 24px;
    font-weight: bold;
    margin: 10px 0;
}

.alert{
    color: #FFF;
    padding: 1px 16px;
    line-height: 1.5;
    border-radius: 3px;
}

.close {
    text-decoration: none;
    float: right;
    font-size: 24px;
    font-weight: bold;
    color: inherit;
    cursor: pointer;
}