.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 20px;
    grid-auto-flow: row;
    margin-top: 1em;
}

.box {
    border: 1px solid #ccc;
    border-radius: 7px;

    background: #fff;
}

.box-header {
    background: #dcdcde;
    padding: 1em;
    font-weight: bold;
}

.box-body {
    padding: 1em;
}

.alert {
    position: relative;
    padding: .75rem 1.25rem;
    margin-bottom: 1rem;
    border: 1px solid transparent;
    border-radius: .25rem;
}

.alert-success {
    color: #155724;
    background-color: #d4edda;
    border-color: #c3e6cb;
}

.alert-warning {
    color: #856404;
    background-color: #fff3cd;
    border-color: #ffeeba;
}

.alert-info {
    color: #0c5460;
    background-color: #d1ecf1;
    border-color: #bee5eb;
}