body {
            background-color: black;
            color: white;
            font-family: Arial, sans-serif;
            display: flex;
            align-items: center;
            justify-content: center;
            height: 100vh;
            flex-direction: column;
        }
        .warning {
            color: red;
            display: none; 
        }
        .btn-group {
            margin-top: 20px;
        }
        button {
         
        
            padding: 10px 20px;
                background-color: var(--ag-button-color-background,#333);
  border: var(--ag-button-border,0);
  border-radius: var(--ag-button-radius,3px);
  color: var(--ag-button-color-text,#fff);
  cursor: var(--ag-button-cursor,pointer);
  font-size: var(--ag-button-size,1rem);
  font-weight: var(--ag-button-weight,600);
  padding: var(--ag-button-padding,.5rem 1rem);
        }