body {
  font-size: 20px; /* desktop default */
  background-color: #E3F2F8;
  margin:0;
}

@media (max-width: 768px) {
  body {
    font-size: 16px; /* mobile */
  }
}

button{background-color: rgb(37, 219, 0);
  cursor: pointer;
  padding: 20px 30px;
  font-size: 16px;

}