select has Extra top padding from div

Question

I want a dropdown with custom arrow.
I have made a div wrapper with arrow image background around my select.

The problem is that the select has 3-4 pixels top padding from the div. And I can't find the reason.

<style>

    .styleSelect select {
        font-weight:bold;
        -moz-appearance:none;
        -webkit-appearance: none;
        border:none;
        width: 140px;
    }

    .styleSelect select::-ms-expand {
        display: none;
    }

    .styleSelect {
        width: 120px;
        overflow: hidden;
        background: url("/Images/dropdown_arrow.gif") no-repeat right #fff;
        border: 1px solid #000;
        float: right;
        margin-left: 3px;
        border-radius: 8px;
    }

</style>

Here is my html:

<form>
    <div class="styleSelect">     
        <select></select>
    </div>
</form>

Answer 1

You can try this: For this example I use a navbar height of 50px but for the 50 you can use your own navbar or parent object height.

.styleSelect select{
  line-height:50px;
  height:50px;
  /*and ofcourse your other code*/
}

This should center the object vertical. You can also try vertical-align:middle;

Answer 2

嘿，我还发现，如果我向div添加font-size: 0 px ，那也可以