#fixed-masthead {
  display:-webkit-box;
  display:-ms-flexbox;
  display:flex;
  -webkit-box-pack: justify;
  -ms-flex-pack: justify;
  justify-content: space-between;
  -webkit-box-align:center;
  -ms-flex-align:center;
  align-items:center;
}
#fixed-masthead-center {
  flex-grow: 1;
}
#fixed-masthead-left,
#fixed-masthead-right {
  width: 25%;
}