#10 Flexbox

.container {
  display: flex;
  flex-direction: row;        /* row | column | row-reverse | column-reverse */
  flex-wrap: wrap;            /* nowrap | wrap | wrap-reverse */
  justify-content: center;    /* Main axis alignment */
  align-items: center;        /* Cross axis alignment */
  gap: 16px;                  /* Space between items */
}

.item {
  flex-grow: 1;     /* Grow to fill space (0 = don't grow) */
  flex-shrink: 0;   /* Don't shrink below basis */
  flex-basis: 200px; /* Initial size before growing/shrinking */

  /* Shorthand */
  flex: 1;          /* flex: 1 1 0% */
  flex: 0 0 auto;   /* Don't grow or shrink */
  flex: 1 0 200px;  /* Grow from 200px, don't shrink */

  align-self: center; /* Override container's align-items */
  order: -1;         /* Reorder visually */
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 24px;
}

.nav-links {
  display: flex;
  gap: 16px;
}

/* Perfect centering */
.center {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}

.cards {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

.card {
  flex: 1 1 300px; /* Grow, shrink, min 300px */
  max-width: 400px;
}