#number-4{
  width: 100px;
  height: 100px;
  border-right: 100px solid salmon;
  border-top: 100px solid transparent;
  position:absolute;
  top:110px;
  left:10px;
}

#one{width: 100px;
  height:350px;
  border-right: 100px solid salmon;
   border-top: 100px solid transparent;
  /*border-top: 100px solid blue;*/
  float:right;
  position:absolute;
  top:10px;
  left:110px;
}

#two{
  width: 100px;
  height: 100px;
  border-right: 200px solid salmon;
  float:right;
  position:absolute;
  top:210px;
  left:110px;
}

#three{
  width: 0;
  height: 0;
  border-bottom: 100px solid salmon;
  border-left: 100px solid transparent;
  position:absolute;
  top:210px;
  left:10px;
}