html {
  font-size: 14px;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}
/*
html {
  position: relative;
  min-height: 100%;
}

body {
  margin-bottom: 60px;
}
*/

html, body {
    height: 100%;
    margin: 0;
    overflow: hidden;
}

body {
    display: flex;
    align-items: center;
    justify-content: center;
    background: black;  
    height: 100%;   
}