body {
  background-color: darkolivegreen;
}
.panels {
  display: flex
}
.panels > div {
  border: 1px solid black;
  background-color: darkslategray;
  margin: 10px;
  padding: 10px;
  border-radius: 10px;
  color: rgb(75, 185, 75);
}
.panels > div h2 {
  background-color: gray;
  border-bottom: 4px solid darkolivegreen;
  color: black;
}
.panels > div textarea {
  background-color: rgb(41, 59, 10);
  color: rgb(75, 185, 75);
}