#buttonContainer {
  position: fixed;
  width: 100%;
  height: 60px;
  bottom: 5%;
  z-index: 3;
}



/* Button Style */
body {
  font-family: sans-serif;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

* {
  box-sizing: border-box;
}