.activity-toggle {
  margin: 0 0 1rem;
  border: 1px solid #d9d9d9;
  border-radius: 6px;
  background: #fff;
  overflow: hidden;
}

.activity-toggle__summary {
  cursor: pointer;
  padding: 0.9rem 1rem;
  font-weight: 600;
  list-style: none;
  position: relative;
}

.activity-toggle__summary::-webkit-details-marker {
  display: none;
}

.activity-toggle__summary::after {
  content: "+";
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
}

.activity-toggle[open] .activity-toggle__summary::after {
  content: "–";
}

.activity-toggle__content {
  padding: 1rem;
  border-top: 1px solid #e5e5e5;
}