style.css

body{
  margin:0;
  overflow:hidden;
}

a{
  text-decoration:none;
  color:red;
}

#overlay{
  position:absolute;
  bottom:0;
  right:0;
  display:block;
  text-align:center;
  background-color: white;
  color:black;
  font-family: Arial;
  font-size:16px;
  font-weight:bold;
  border:3px solid black;
  margin:10px;
  padding:10px;
}

.taille{
  text-transform: uppercase;
}

button{
  color:black;
  font-family: Arial;
  border:1px solid black;
  background:white;
  width:24px;
  height:24px;
  font-size:16px;
  font-weight:bold;
  cursor:pointer;
}
.interface{
  font-size:12px;
  padding-top:10px;
  padding-bottom:10px;
}

.inputtext{
  border:1px solid black;
  width:80px;
  color:gray;
  margin-bottom:20px;
}

.inputbutton{
  background-color: white;
  color:black;
  font-family: Arial;
  font-size:16px;
  font-weight:bold;
  border:1px solid black;
  cursor:pointer;
}

#download{
  background-color: white;
  color:black;
  font-family: Arial;
  font-size:16px;
  font-weight:bold;
  border:1px solid black;
  padding:3px;
  text-transform:uppercase;
}