iframe#personaBar-iframe{
min-width: auto;
}
#Toolbar-Overlay .Toolbar-OverlayEmailAlertLi{
    color:#000;
}

#vicwestTN {
height: calc((100vh - (100px + 80px)) !important;
}
or
#vicwestTN {
height: calc(100vh - 180px) !important;
}
(where 100px is the height of y

<style>
  .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-gap: 10px; /* optional, adds space between columns */
  }
</style>