#div1{

  width: 100%;

  min-height: 50px;

  background-color: yellow;

  position:relative;

}

#sp2{

  position:absolute;

  width: 20%;

  min-height: 100%;

  background-color: blue;

}

#sp3{

  width: 50%;

  margin-left:20%;

  min-height: 100%;

  display: inline-block;

  background-color: red;

  word-break: break-all;

  word-wrap: break-word;

}