.bu-widget {
  border: 1px solid #ccc;
  padding: 1em;
  background: #f5f5f5;
  max-width: 400px;
}
.bu-section {
  margin-bottom: 1.5em;
}
.bu-section input {
  width: 100%;
  box-sizing: border-box;
  margin-bottom: .5em;
}
.bu-section h3 {
  margin-bottom: .2em;
}
.bu-section p {
  font-size: .95em;
  color: #666;
  margin-bottom: .5em;
}