p { border-style: solid; border-width: 1px; border-color: blue; }

.largeur_fixe { width: 10em; }

.hauteur_fixe { height: 20ex; }

.grosse_boite { 
  border-width: 5px;
  border-color: green;
  padding: 5em;
  margin:3em;
  background-color: yellow;
  color: black;
  width:15em;
}

.centre {
  margin-left: auto;
  margin-right: auto;
  width: 30em;
}

.deborde_visible {
  width: 5em;
  height: 5em;
  overflow: visible;
}

.deborde_hidden {
  width: 5em;
  height: 5em;
  overflow: hidden;
}

.deborde_scroll {
  width: 5em;
  height: 5em;
  overflow: scroll;
}

.flottant_droite {
  float: right;
  background-color: silver;
  color: black;
  width: 5em;
}

.degagement {
  clear: both;
}

.relative {
  position: relative;
  bottom: 1em;
  right: 1em;
  background-color: olive;
}

.absolute {
  position: absolute;
  bottom: 0;
  right: 0;
  width: 7em;
  height: 7em;
}

.fixed {
  color: red;
  background-color: white;
  position: fixed;
  width: 3em;
  height: 4ex;
  top: 50%;
  left: 50%;
}

body { position: relative; }

td { border-width: 1px; border-color: black; border-style: solid; }

table.fusion { border-collapse : collapse; }
table.non_fusion { border-collapse: separate; }

td { width: 8em; height: 2em; }

.top_caption { caption-side: top; }
.bottom_caption { caption-side: bottom; }