html {
  background-color: #000000;  
}

div.logo {
  display: flex;
  justify-content: space-around;
}

header {
  position: sticky;
  top: -1px;
  bottom: 100%;
  border-bottom-style: groove;
  display: flex;
  align-items: center;
  justify-content: space-around;
  background-color: #01034a;
  color: #FFFFFF;
  text-shadow: 2px 2px 5px red;
  text-border: black;
  font-size: 1.25em;
}

div.banner {
  color: #FFFFFF;
  background-color: #484c52;
  display: flex;
  text-align: center;
  font-size: 1em;
  width: 100%;
  justify-content: space-around;
}

figure {
  display: inline-block;
  float: center;
  justify-content: center;
}

main {
  background-color: #858d99;
  display: block;
  margin-left: auto;
  margin-right: auto;
}

footer {
  border-top-style: groove;
  bottom: -1px;
  display: float;
  justify-content: space-around;
  background-color: #01034a;
  color: #000000;
  text-align:center;
}

b {
    color: #FFFFFF;
}