.my_tab {
    border: 1px solid lightgrey;
    border-radius: 25px;
    text-align: center;
    padding: 1%;
  }
  
  .my_tab:hover, .my_tab:hover span {
    background-color: lightgrey;
  }

  .my_tab-active {
    background-color: lightgrey;
  }
  
  /* #memorygraphbutton {
    padding: 5%;
  } */