styles.css

body {
    font-family: Arial, sans-serif;
  }
  #form {
    margin: auto;
    width: 300px;
  }
  input[type="text"],
  select {
    display: block;
    margin-bottom: .5em;
    font-size: 1rem;
    border: 1px solid blueviolet;
    border-radius: 4px;
    box-shadow: 0 2px 3px rgba(0, 0, 0, 0.1);
    padding-bottom: 0.5em;
  }
  textarea {
    display: block;
    padding: 1em;
    font-size: 1rem;
    width: 100%;
    border: 1px solid blueviolet;
    border-radius: 4px;
    box-shadow: 0 2px 3px rgba(0, 0, 0, 0.1);
  }
  input[type="button"] {
    background-color: #9595bd;
    color: white;
    padding: 1em 2em;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    margin-bottom: 1em;
    transition: background-color 0.2s ease, transform 0.1s ease;
  }
  input[type="button"]:active {
    background-color: #7a7aad;
    transform: translateY(2px);
  }
  /* Spinner styles */
  .spinner {
    display: none; /* Hidden by default */
    width: 30px;
    height: 30px;
    border: 4px solid rgba(150, 150, 189, 0.3); /* Light grey */
    border-top: 4px solid #9595bd; /* Darker grey */
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-top: 1em;
  }
  /* Keyframes for spin animation */
  @keyframes spin {
      0% { transform: rotate(0deg); }
      100% { transform: rotate(360deg); }
  }
  #response {
    margin: auto;
    padding: 1em;
    width: 675px;
    white-space: pre-wrap;
    background-color: bisque;
    border: 1px solid blueviolet;
  }

/* left navigation stuff */
  .container {
    display: flex;
    height: 100vh;
    width: 100%;
}

.sidebar {
    width: 200px;
    background-color: #333;
    color: white;
    padding: 15px;
}

.sidebar ul {
    list-style-type: none;
    padding: 0;
}

.sidebar ul li {
    margin-bottom: 10px;
}

.sidebar ul li a {
    color: white;
    text-decoration: none;
    display: block;
    padding: 10px;
    border-radius: 4px;
    transition: background-color 0.3s;
}

.sidebar ul li a:hover {
    background-color: #575757;
}

.main-content {
    flex-grow: 1;
    padding: 20px;
}

.spinner {
    display: none;
    width: 30px;
    height: 30px;
    border: 4px solid rgba(150, 150, 189, 0.3);
    border-top: 4px solid #9595bd;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-top: 1em;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}