#banner{
  width: 970px;
  height: 250px;
  left: 0;
  top: 0;
  position: absolute;
  overflow: hidden;
}
.all{
  position: absolute;
}
#text_1{
  display: none;
}
#text_1_back{
  display: none;
}
#text_2{
  display: none;
}
#text_2_back{
  display: none;
}
#text_3{
  display: none;
}
#text_3_back{
  display: none;
}
#text_4{
  display: none;
}
#text_4_back{
  display: none;
}
#text_5{
  display: none;
}