body {
  background-image: url("flowergifgg.gif ");
  background-repeat: repeat;
  background-attachment: fixed;
}
#head {
  
#main {
  margin:auto;
  margin-top:70px;
  width:50%;
  text-align: center;
}
#navi {
  margin: auto;
  text-align: center;
  width:60%;
  border-radius:25px;
}
li {
  display: inline;
  text-align: center;
}
#be {
  background-color: red;
  width:60%;
  margin:auto;
}
#main {
  background-color: pink;
}