how to change the drop down arrow of select tag code example

Example 1: change select arrow css

select {
    width: 268px;
    padding: 5px;
    font-size: 16px;
    line-height: 1;
    border: 0;
    border-radius: 5px;
    height: 34px;
    background: url(http://cdn1.iconfinder.com/data/icons/cc_mono_icon_set/blacks/16x16/br_down.png) no-repeat right #ddd;
    -webkit-appearance: none;
    background-position-x: 244px;
}

Example 2: how to change the select arrow in css

.styled-select {
  width: 100px;
  height: 17px;
  overflow: hidden;
  overflow: -moz-hidden-unscrollable;
  background: url(images/downarrow_blue.png) no-repeat right white;
  border: 2px double red;
  display: inline-block;
  position: relative;
}

.styled-select select {
  background: transparent;
  -webkit-appearance: none;
  width: 100px;
  font-size: 11px;
  border: 0;
  height: 17px;
  position: absolute;
  left: 0;
  top: 0;
}

body {
  background-color: #333333;
  color: #FFFFFF;
}

.block label {
  color: white;
}