Please follow the way like below:
.selectParent {_x000D_
width:120px;_x000D_
overflow:hidden; _x000D_
}_x000D_
.selectParent select { _x000D_
display: block;_x000D_
width: 100%;_x000D_
padding: 2px 25px 2px 2px; _x000D_
border: none; _x000D_
background: url("http://cdn1.iconfinder.com/data/icons/cc_mono_icon_set/blacks/16x16/br_down.png") right center no-repeat; _x000D_
appearance: none; _x000D_
-webkit-appearance: none;_x000D_
-moz-appearance: none; _x000D_
}_x000D_
.selectParent.left select {_x000D_
direction: rtl;_x000D_
padding: 2px 2px 2px 25px;_x000D_
background-position: left center;_x000D_
}_x000D_
/* for IE and Edge */ _x000D_
select::-ms-expand { _x000D_
display: none; _x000D_
}
_x000D_
<div class="selectParent">_x000D_
<select>_x000D_
<option value="1">Option 1</option>_x000D_
<option value="2">Option 2</option> _x000D_
</select>_x000D_
</div>_x000D_
<br />_x000D_
<div class="selectParent left">_x000D_
<select>_x000D_
<option value="1">Option 1</option>_x000D_
<option value="2">Option 2</option> _x000D_
</select>_x000D_
</div>
_x000D_