styles.css

* {
  margin: 0;
  padding: 0;
  outline: none;
  text-decoration: none;
}

body {
  width: 100%;
  height: 100vh;
  overflow: hidden;
}

.playground {
  display: flex;
  width: 100%;
  height: 100%;
  background-color: #21262d;
  color: #f7f7f7f7;
}

.navbar {
  padding-left: 10px;
  display: flex;
  justify-content: space-around;
  align-items: center;
  background-color: #1d2127;
  width: 100%;
  height: 8%;
}

.navbar__image {
  width: 20%;
}

.navbar__link {
  width: 15%;
  color: #f7f7f7;
  font-weight: bold;
  font-size: 18px;
}

.navbar__run_code_button {
  background: none;
  border: none;
  width: 15%;
  font-size: 18px;
  font-weight: bold;
  color: #f7f7f7;
  cursor: pointer;
}

.navbar__run_code_button:focus {
  outline: none;
}

.navbar__run_code_button:hover {
  opacity: 1.2;
}

.playground__code {
  resize: none;
  width: 50%;
  height: 100%;
  border: none;
  border-right: 1px solid #282d34;
  background: transparent;
  padding: 10px;
  font-weight: bold;
  font-size: 16px;
  color: #f7f7f7;
}

.playground__output {
  color: #f7f7f7;
  width: 50%;
  height: 100%;
  padding: 10px;
}