body {
  background-color: #F9F8F4;
  font-family: 'Fira Sans', sans-serif;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  grid-auto-rows: 150px;
  grid-gap: .5rem;
  padding: .5rem;
  margin: 0;
  overflow-x: hidden;
  overflow-y: auto;
}

button {
  --bgcolor: #fff;
  --fgcolor: #fff;
  background-color: var(--bgcolor);
  border: none;
  color: var(--fgcolor);
  font-size: 1rem;
  font-family: 'Fira Sans', sans-serif;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  text-align: center;
  border-radius: .5rem;
  flex-direction: column;
  transition: transform .3s ease-in-out;
}
button:hover, button:focus {
  transform: scale(1.15);
  box-shadow: none;
  outline: none;
}

input {
  font-family: 'Fira Sans', sans-serif;
  margin-top: 1rem;
  display: inline;
  text-align: center;
  padding: 0;
  background-color: transparent;
  border: 0;
  color: currentcolor;
}
input:hover, input:focus {
  box-shadow: none;
  outline: none;
}