header { font-family: "Trebuchet MS", Helvetica, sans-serif;
  text-align: center; }
header h1 { font-size: x-large; margin-bottom:0.5em; }
header h2 { font-size: large; }

.Container.DropDown { position:relative; top:70px;
  background-color: #E0FFFF; }

nav.Menu.DropDown { position: fixed;
  margin-left:10px;;
  top:70px;
  height:40px;
  font-family: "Trebuchet MS", Helvetica, sans-serif;
  font-size: small;
  background:#66CDAA;
  z-index:100; }
nav.Menu.DropDown li{ position:relative; float:left;
  width:8em; }
nav.Menu.DropDown a { display:block;
  text-decoration:none;
  padding:5px 5px;
  background:#66CDAA;
  color:#0000CD;
  transition:0.2s; }

/*----- Place hidden sub level menus -----*/
nav.Menu.DropDown ul ul{
  position:absolute; top:20; width:100%;
  visibility:hidden; opacity:0;
  transition: transform 0.3s;
  transform: translateX(50px); }
  /*----- Show hidden sub level menus -----*/
nav.Menu.DropDown li:hover > ul { left:0;
  visibility:visible; opacity:1; z-index:50;
  transform: translateX(0px);  }


.Container.DropDown main { position:relative;
  top:40px;
  padding:5px;
  background-color: #E0FFFF ;
  color:#00008B;
  z-index:10
  }

aside { padding-left:10%;
  font-family: Arial, Helvetica, sans-serif;
  font-weight: bold;
  background-color:  #87CEFA;
  }

/*----- Fichiers de règles de conjugaison -----*/
article.Verbos { display:flex;
  margin:0 0 5px 0px;
  padding:10px;
  background-color:#87CEFA;
  }

article.Verbos table {
  vertical-align;
  margin: 0 5px 0 5px;
  background-color: #6495ED; }

article.Verbos th { padding: 0px 10px 0px 10px;
  font-family: Arial, Helvetica, sans-serif;
  text-align:center;
  font-weight: bold; }
article.Verbos tr {
  background-color: #ADD8E6;
  border: solid #FF0000 }

article.Verbos span.StyleIrr {
  color: #FF0000 ;
  font-weight: bold;
  font-size: large }
article.Verbos span.StyleReg {
  color: #32CD32 ;
  font-weight: bold;
  font-size: large }

/*----- Fichiers de lignes d'exercices -----*/
dl.Exercicios { display: grid;
  padding: 10px;
  color: #00008B;
  background-color: #87CEEB;
  grid-gap: 5px;
  border: double #7FFF00;
  grid-template-columns: 7fr 2fr 2fr 7fr 1fr 1fr;
  }
dl.Exercicios dt {
  font-family: "Trebuchet MS", Helvetica, sans-serif;
  font-size: medium;
   }

.VerInf { background-color: #00BFFF;
    text-align: center }
.Com { text-align: right }
button { background-color: rgb(0, 255, 0);
    color: rgb(0, 0, 139);
    text-align: center;
    border-radius: 50%;
    position: relative; }
input { width: 10em;
    background-color: #FFFFC8;
    font-size: 20px;
    border:none;
    font-family: Verdana, Geneva, sans-serif;
    text-align:center; }