html, body {
 margin: 0;
 padding: 0;
 }
body {
 background-color: #ebf6ff; 
Color : black
 font-family: arial;
 font-size: 100%;
 }
h1 {
 font-size: 200%; 
 color: #00bdc9; 
font-family: arial;
 text-align: center;
 }
h2 {
 font-size: 150%; 
 color: #24d6b9; 
font-family: arial;
 padding-left: 15px;
 }

h3 {
 font-size: 130%; 
 color: #40cf5d; 
font-family: arial;
 text-align: center;
 }


p,ul,li,td {
 color: black; 
font-family: arial;
font-size: 1.1rem;
 }

a:link {
 color: #00f0c9; 
 text-decoration: underline;
 }
a:visited {
 color: #40cf5d;
 }
a:hover {
 color: blue
 text-decoration: none;
}
a:active, a:focus {
 color: purple;
}

button a {
  border: none;
  color: white;
  padding: 15px 32px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
  margin: 4px 2px;
  cursor: pointer;
background-color: #008CBA;
}


button a:hover {
}

header
{
     background: #ebf6ff;
     height: 100px;
     width: 100%;
     margin: 0;
     padding: 10px;
}


table {
    border-collapse: collapse;
    margin: auto;
}





#menu-demo2, #menu-demo2 ul{
padding:0;
margin:0;
list-style:none;
text-align:center;
}
#menu-demo2 li{
display:inline-block;
position:relative;
border-radius:8px 8px 0 0;
}
#menu-demo2 ul li{
display:inherit;
border-radius:0;
}
#menu-demo2 ul li:hover{
border-radius:0;
}
#menu-demo2 ul li:last-child{
border-radius:0 0 8px 8px;
}
#menu-demo2 ul{
position:absolute;
z-index: 1000;
max-height:0;
left: 0;
right: 0;
overflow:hidden;
-moz-transition: .8s all .3s;
-webkit-transition: .8s all .3s;
transition: .8s all .3s;
}
#menu-demo2 li:hover ul{
max-height:15em;
}
/* background des liens menus */
#menu-demo2 li:first-child{
background-color: #729EBF;
background-image: -webkit-linear-gradient(top, #729EBF 0%, #333A40 100%);
background-image:linear-gradient(to bottom, #729EBF 0%, #333A40 100%);
}
#menu-demo2 li:nth-child(2){
background-color: #729EBF;
background-image: -webkit-linear-gradient(top, #729EBF 0%, #333A40 100%);
background-image:linear-gradient(to bottom, #729EBF 0%, #333A40 100%);
}
#menu-demo2 li:nth-child(3){
background-color: #729EBF;
background-image: -webkit-linear-gradient(top, #729EBF 0%, #333A40 100%);
background-image:linear-gradient(to bottom, #729EBF 0%, #333A40 100%);
}
#menu-demo2 li:nth-child(4){
background-color: #729EBF;
background-image: -webkit-linear-gradient(top, #729EBF 0%, #333A40 100%);
background-image:linear-gradient(to bottom, #729EBF 0%, #333A40 100%);
}

#menu-demo2 li:nth-child(5){
background-color: #729EBF;
background-image: -webkit-linear-gradient(top, #729EBF 0%, #333A40 100%);
background-image:linear-gradient(to bottom, #729EBF 0%, #333A40 100%);
}


#menu-demo2 li:last-child{
background-color: #729EBF;
background-image: -webkit-linear-gradient(top, #729EBF 0%, #333A40 100%);
background-image:linear-gradient(to bottom, #729EBF 0%, #333A40 100%);
}
/* background des liens sous menus */
#menu-demo2 li:first-child li{
background:#406382;
}
#menu-demo2 li:nth-child(2) li{
background:#406382;
}
#menu-demo2 li:nth-child(3) li{
background:#406382;
}
#menu-demo2 li:nth-child(4) li{
background:#406382;
}
#menu-demo2 li:nth-child(5) li{
background:#406382;
}
#menu-demo2 li:last-child li{
background:#406382;
}
/* background des liens menus et sous menus au survol */
#menu-demo2 li:first-child:hover, #menu-demo2 li:first-child li:hover{
background:#729EBF;
}
#menu-demo2 li:nth-child(2):hover, #menu-demo2 li:nth-child(2) li:hover{
background:#729EBF;
}
#menu-demo2 li:nth-child(3):hover, #menu-demo2 li:nth-child(3) li:hover{
background:#729EBF;
}
#menu-demo2 li:nth-child(4):hover, #menu-demo2 li:nth-child(3) li:hover{
background:#729EBF;
}
#menu-demo2 li:nth-child(5):hover, #menu-demo2 li:nth-child(3) li:hover{
background:#729EBF;
}

#menu-demo2 li:last-child:hover, #menu-demo2 li:last-child li:hover{
background:#729EBF;
}
/* les a href */
#menu-demo2 a{
text-decoration:none;
display:block;
padding:8px 32px;
color:#fff;
font-family:arial;
}
#menu-demo2 ul a{
padding:8px 0;
}
#menu-demo2 li:hover li a{
color:#fff;
text-transform:inherit;
}
#menu-demo2 li:hover a, #menu-demo2 li li:hover a{
color:#000;
}