/*
  Styles for the collapsible alert "flippy triangle" button are, apart from the "right" attribute,
  a straight copy of .close in Bootstrap. Impractical to do anything else given that they need to co-exist.
  Also removed the :focus option from :hover.
*/

div.alert-collapsible button.toggle {
  position: relative;
  top: -2px;
  right: 20px;
  float: right;
  font-size: 18px;
  font-weight: bold;
  line-height: 1;
  color: inherit;
  text-shadow: 0 1px 0 #fff;
  opacity: 0.2;
  filter: alpha(opacity=20);
  padding: 0;
  cursor: pointer;
  background: transparent;
  border: 0;
  -webkit-appearance: none;
}

  div.alert-collapsible button.toggle:hover {
    color: #000;
    text-decoration: none;
    cursor: pointer;
    opacity: 0.5;
    filter: alpha(opacity=50);
  }