body {
  font-family: sans-serif;
  background: #fff;
  display: flex;
  justify-content: center;
  padding: 50px 10px;
}
.container {
  max-width: 500px;
  text-align: center;
  width: 100%;
}
input {
  width: 100%;
  padding: 10px;
  margin: 10px 0;
  font-size: 16px;
}
button {
  padding: 10px 20px;
  background: crimson;
  border: none;
  color: white;
  font-weight: bold;
  font-size: 18px;
  margin-bottom: 10px;
  cursor: pointer;
  border-radius: 6px;
}
canvas {
  display: block;
  margin: 0 auto;
  transition: transform 5s ease-out;
}
.pointer {
  width: 0;
  height: 0;
  border-left: 15px solid transparent;
  border-right: 15px solid transparent;
  border-top: 25px solid red;
  margin: 5px auto -60px auto;
  position: relative;
  z-index: 10;
}