.sb-container {
  max-width: 700px;
  margin: 1.5em auto;
  padding: 1em;
  border: 1px solid #ddd;
  background: #fafafa;
  border-radius: 6px;
}

.sb-container h2 {
  margin-bottom: 0.5em;
  font-size: 1.5em;
}

.sb-container label {
  font-weight: bold;
}

.sb-container input[type="text"] {
  width: calc(100% - 120px);
  padding: 0.5em;
  margin: 0.2em 0;
  border: 1px solid #ccc;
  border-radius: 4px;
}

.sb-xpath-row {
  display: flex;
  align-items: center;
  margin-bottom: 0.5em;
}

.sb-xpath-row label {
  margin-right: 0.5em;
}

.sb-xpath-row button.sb-remove {
  margin-left: 0.5em;
  background: #e74c3c;
  color: #fff;
  border: none;
  padding: 0.3em 0.6em;
  border-radius: 3px;
  cursor: pointer;
}

#sb-add, #sb-form button[type="submit"] {
  background: #3498db;
  color: #fff;
  border: none;
  padding: 0.6em 1.2em;
  border-radius: 4px;
  cursor: pointer;
  margin-top: 0.5em;
}

#sb-add:hover, #sb-form button[type="submit"]:hover, .sb-xpath-row button.sb-remove:hover {
  opacity: 0.9;
}

.sb-container pre {
  background: #272822;
  color: #f8f8f2;
  padding: 1em;
  overflow-x: auto;
  border-radius: 4px;
}