* {
  padding: 0;
  margin: 0;
  border: none;
  list-style-type: none;
  outline: 0; }

.concealed {
  visibility: hidden; }

.relative {
  position: relative; }

.left {
  position: relative;
  float: left; }

.right {
  position: relative;
  float: right; }

.clear {
  clear: both; }