*{
  margin: 0;
  padding: 0;
}

header{
  min-height: 78px;
}

html{
  height: 100%;
}

main{
  min-height: 100vh;
  background-color: aqua;
}

footer{
  min-height: 78px;
  background-color; #62a5a1;
  position: fixed;
  bottom,: 0;
  left: 0;
  width: 100%;
}