body {
  font-family: 'Arial', sans-serif;
  background-color: #f4f7fa;
  margin: 0;
  padding: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
}

#btn {
  background-color: #4CAF50;
  color: white;
  padding: 10px 20px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  font-size: 16px;
  transition: background-color 0.3s ease;
  margin-bottom: 15px;
}

#btn:hover {
  background-color: #45a049;
}

#box {
  width: 100px;
  height: 100px;
  background-color: #87CEEB;
  margin: 20px;
  border-radius: 10px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  transition: background-color 0.3s ease;
}

#myForm {
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: 100%;
  max-width: 400px;
  background-color: white;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

input[type="text"] {
  padding: 10px;
  font-size: 16px;
  border: 1px solid #ccc;
  border-radius: 5px;
  outline: none;
  transition: border-color 0.3s ease;
}

input[type="text"]:focus {
  border-color: #4CAF50;
  box-shadow: 0 0 5px rgba(76, 175, 80, 0.3);
}

#addParagraphBtn {
  background-color: #007BFF;
  color: white;
  padding: 10px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  font-size: 16px;
  transition: background-color 0.3s ease;
}

#addParagraphBtn:hover {
  background-color: #0056b3;
}

#paragraphContainer {
  margin-top: 20px;
  width: 100%;
  max-width: 400px;
}

#paragraphContainer p {
  background-color: white;
  padding: 15px;
  margin: 10px 0;
  border-radius: 5px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
  font-size: 16px;
  color: #333;
  border-left: 4px solid #4CAF50;
}

#running_btn {
  position: absolute;
  padding: 10px 20px;
  font-size: 16px;
  cursor: pointer;
}