.pttCallView { position: relative; display: flex; flex-direction: column; overflow: hidden; min-height: 100%; position: fixed; height: 100%; width: 100%; } .headerSeparator { width: calc(100% - 40px); height: 1px; margin: 0 20px; background-color: #21262C; } .center { width: 100%; display: flex; flex: 1; flex-direction: column; justify-content: center; align-items: center; } .actionTip { margin-top: 42px; font-size: 17px; } .participants { margin: 24px 20px 0 20px; } .participants > p { color: #A9B2BC; margin-bottom: 8px; }