.signal-bars {
    display: flex;
    gap: 3px;
    align-items: end;
    height: 14px;
}

.signal-bar {
    width: 4px;
    height: 12px;
    background: #0d6efd;
    border-radius: 2px;
    animation: grow 0.4s ease-in-out;
}


@keyframes grow {
    from {
        height: 4px;
    }

    to {
        height: 12px;
    }
}