.accordion-archives .acc-btn {
  width: 100%;
  background: #eee;
  border: none;
  padding: 8px 10px;
  text-align: left;
  font-size: 15px;
  cursor: pointer;
  margin-top: 5px;
}
.accordion-archives .acc-content { display:none; padding:0 0 0 15px; }