body {
  font-family: "Courier New", Courier, monospace;
  font-size: 1.5rem;
  text-align: center;
  margin: 50px;
  position: relative;
  height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  background-color: rgb(0, 0, 0);
}

.btn {
  display: inline-block;
  color: #ffffff;
  text-decoration: underline;
  border-radius: 5px;
  margin-bottom: 40px;
}

#draggable-cube {
  width: 250px;
  height: 100px;
  background: rgb(189, 78, 78);
  position: absolute;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  justify-content: center;
  align-items: center;
  color: white;
  font-size: 24px;
  font-weight: bold;
  cursor: grab;
  z-index: 1000;
}

.content {
  margin-top: 120px;
  width: 80%;
  max-width: 800px;
  color: white;
}

.code-block {
  background: #1e1e1e;
  color: #fff;
  padding: 15px;
  border-radius: 5px;
  margin: 15px 0;
  font-family: "Courier New", monospace;
  overflow-x: auto;
  position: relative;
  text-align: left;
}

.code-header {
  background: #333;
  color: #ffcc00;
  font-size: 14px;
  padding: 5px 10px;
  border-radius: 5px 5px 0 0;
  font-weight: bold;
}

pre {
  margin: 0;
  padding: 10px;
  font-size: 14px;
  white-space: pre;
  overflow-x: auto;
}

code {
  font-family: "Courier New", monospace;
  display: block;
  color: #ffcc00;
  padding: 5px;
  white-space: pre-wrap;
}

header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: black(0, 0, 0, 0);
  padding: 10px 20px;
  display: flex;
  justify-content: flex-end;
  z-index: 1000;
}

.header-links a {
  color: white;
  text-decoration: none;
  font-size: 16px;
  margin-right: 80px;
  font-weight: bold;
}

.header-links a:hover {
  color: #ffcc00;
}

@media (max-width: 768px) {
  header {
    position: fixed;
    z-index: 10000;
    background: black;
  }
}