body{
  font-family: Tahoma, sans-serif;
  color:#454545;
}
.clear {
  clear:both;
}
.aviso {
  width:350px;
  margin:10px 0 10px 0;
}
.aviso p {
  margin-top:5px;
  float:left;
}
.descarga {
  float:left;
  border:none;
}