.mb-20 {
    margin-bottom: 20px;
}

.mt-20 {
    margin-top: 20px;
}

#city-filter {
    max-width: 300px;
}

#alert-placeholder {
    position: fixed;
    top: 30px;
    right: 30px;
    z-index: 1041;
}

#alert-placeholder .alert {
    margin-bottom: 0;
}

#alert-placeholder .close {
    margin-left: 20px;
}