* {
  box-sizing: border-box;
  font-family: Arial, Tahoma;
}
.parent {
  margin: 5% auto;
  width: 80vw;
  background-color: #eee;
  padding: 20px;
}
.parent input {
  border: none;
  padding: 15px;
  margin-bottom: 15px;
  width: 100%;
  font-size: 20px;
}
.parent input:focus {
  outline: none;
}
.parent .buttons {
  display: flex;
  justify-content: space-between;
}
.parent .buttons span {
  background-color: #009688;
  text-align: center;
  color: #fff;
  padding: 6px 10px;
  border-radius: 4px;
  cursor: pointer;
}
.parent .results {
  background-color: #fff;
  padding: 20px;
  margin-top: 15px;
  border: 2px dashed #eee;
  text-align: center;
}
.parent .results span span {
  font-weight: bold;
  color: #009688;
}
.parent .results span .keys {
  display: block;
}
.vid-link {
  background-color: #ccc;
  text-align: center;
  padding: 20px;
  border: 2px solid #000;
  margin-top: 30px;
}
.vid-link a {
  text-decoration: none;
  color: #000;
  font-size: 24px;
  font-weight: bold;
}

@media only screen and (max-width: 700px) and (min-width: 520px) {
  * {
    font-size: 2vw;
  }
}

@media only screen and (max-width: 519px) {
  .parent .buttons {
    flex-wrap: wrap;
  }
  .parent .buttons span {
    width: 100%;
    margin-bottom: 5%;
  }
}