#user-alert-box { position: fixed; bottom: 0; right: 0; width: 300px; background-color: #f9f9f9; color: #333; padding: 15px; box-shadow: 0 0 10px rgba(0,0,0,0.1); box-sizing: border-box; display: flex; flex-direction: column; align-items: flex-start; z-index: 9999; } #user-alert-box button { background-color: #4CAF50; color: white; border: none; padding: 10px 20px; margin-top: 10px; cursor: pointer; align-self: center; } @media (max-width: 767px) { #user-alert-box { width: 90%; } }