body {
  text-align: left;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
}

.content {
  padding: 1ex 0;
  align-self: center;
  width: 400px;
}

button {
  background: #FFF; border: none;
  font-size: 1.5em;
  padding: 1ex 0;
  margin: 2ex 0;
  width: 400px;
  box-shadow: 0 3px 6px rgba(0,0,0,0.16), 0 3px 6px rgba(0,0,0,0.23);
  transition: all 150ms;
}

button:hover {
  background: #FFA;
  cursor: pointer;
  box-shadow: 0 10px 20px rgba(0,0,0,0.19), 0 6px 6px rgba(0,0,0,0.23);
  transform: translateY(-2px);
}