body { } .edit-container { box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(255,255, 255, 0.19); border-radius: 15px; } .addcard { width: 100%; max-width: 30rem; flex: 0 0 auto; /* prevent flex shrink/grow */ display: flex; justify-content: center; align-items: center; padding: 0.5rem; }