* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: Helvetica, Arial, sans-serif;
}

.body-outer {
  display: inline-block;
  background: #02ed9d;
  background: linear-gradient(180deg, #02ed9d, #009be2);
  padding: 2px;
  margin: 20px;
}

.body-inner {
  display: inline-block;
  padding: 10px 20px;
  min-width: 300px;
  background-color: white;
}

button {
  cursor: pointer;
  padding: 10px;
}