body {
  font-family: Helvetica, sans-serif;
  padding: 0;
  margin: 0;
  width: 100%;
  text-align: center;
  background-color: white;
}

.middle { margin: 60px auto 0 auto; width: 80%; }
.buttons { margin-top: 40px; overflow: hidden; }
.buttons div { width: 50%; height: 110px; margin: 0 auto; float: left; }
img {
  width: 80%;
  max-width: 800px;
  height: auto;
}
input {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;

  font-size: 2.4em;
  padding-top: 8px;
  background: none;
  color: black;
  background-color: white;
  width: 100%;
  max-width: 380px;
  height: 100px;
  border: 3px solid black;
  border-radius: 10px;
  cursor: pointer;
}
input:hover { background-color: lightgray; font-size: 2.5em; }

@media screen and (max-width: 1000px){
  .buttons div { width:100%; margin-bottom: 10px; }
  input { font-size: 1.5em; }
  input:hover { font-size: 1.6em; }
}