* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: rgb(42, 165, 63);
  font-family: Arial, sans-serif;
}

.container {
  background-color: rgb(42, 165, 63);
  width: 100%;
  max-width: 450px;
  margin: auto;
  border: 0px;
  border-radius: 6px;
  padding: 10px;
  color: black;
}

.heading {
  background-color: rgb(217, 20, 0);
  text-align: center;
  font-family: arial;
  font-size: 30px;
  padding: 12px;
  color: white;
}

input {
  width: 100%;
  padding: 10px 12px;
  margin: 6px 0;
  border-radius: 5px;
  border: none;
  outline: none;
  font-size: 16px;
}

.video {
  text-align: center;
  background-color: rgb(42, 165, 63);
}

img, video, iframe {
  max-width: 100%;
  height: auto;
}

@media (max-width: 600px) {
  .heading {
    font-size: 20px;
  }

  .container {
    margin: 5px;
  }

  .video {
    padding: 10px;
  }
}