div#banner
{
  display: block;
  position: relative;
  padding-top: 10%;
  width: 100%;
  background-repeat: no-repeat;
  background-position: center;
}

/* contained by banner, note position: absolute; */
a#logo_box
{
  display: block;
  position: absolute;
  width: 12%;
  top: 0;
  left: 0;
  padding-top: 8%;
  background-repeat: no-repeat;
  background-size: 100%;
  z-index: 10;
}

/* contained by banner, contains mobile menu container, note position: absolute; */
div#inner_banner
{
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  justify-content: flex-end;
  align-items: center;
  position: absolute;
  top:0;
  left:0;
  width: 100%;
  height:100%;
}

/* mobile menu container */
div#inner_banner > div
{
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-end;
  height: 100%;
}

@media screen and ( max-width: 799px )
{
  div#banner > a#log_in
  {
    /* Should be coordinated with mobile menu */
    display: none;
  }
}