.applet {
  background-color: #fffafa;
  border-radius: 5px;
  box-shadow: 1px 1px 2px gray;
  margin: 0 auto;
  width: 300px;
  height: 100px;
}

@media screen and (min-width: 640px) {
  .applet {
    background-color: #fffafa;
    border-radius: 5px;
    box-shadow: 1px 1px 2px gray;
    margin: 0 auto;
    width: 600px;
    height: 100px;
  }
}

line,
circle {
  filter: drop-shadow(1px 1px 2px rgb(0 0 0 / 0.5));
}