.heading {
  font-size: 24px;
  text-decoration: underline;
}

ul.share-buttons{
  list-style: none;
  padding: 0;
}

ul.share-buttons li{
  display: inline;
}

ul.share-buttons .sr-only{
  position: absolute;
  clip: rect(1px 1px 1px 1px);
  clip: rect(1px, 1px, 1px, 1px);
  padding: 0;
  border: 0;
  height: 1px;
  width: 1px;
  overflow: hidden;
}

.nav-container2 { width:940px; margin:auto; height:30px;}
.social-media-list { width: 393px; }
.social-media-list li { display:block; float: left; width:25%; text-align:left; margin: 0 auto;}