body #install-button {
    position: absolute;
    top: 1em;
    left: calc(50% - 9em);
    z-index: 2;
    border: 2px solid var(--primary) !important;
    background: #fff !important;
    color: black !important;
    text-transform: uppercase;
    font-size: 0.6em;
    padding: 1em;
    width: 18em;
    animation: slideInDown;
    animation-duration: 1s;
    animation-fill-mode: backwards;
}

body #install-button::before {
  font-family: "Font Awesome 5 Free";
  content: "\f381";
  margin-right: 0.5em;
  color: var(--primary);
}