<button class="pl on" onclick="select();">최애 프로그래밍 언어</button>
    <ul class="listbox" id="listbox">
        <li><button class="list">Python</button></li>
        <li><button class="list">Java</button></li>
        <li><button class="list">JavaScript</button></li>
        <li><button class="list">C#</button></li>
        <li><button class="list">C/C++</button></li>
    </ul>
/* reset */
ul{
    margin: 0;
    padding: 0;
}

/* design */

.selectbox{
    margin: 150px auto;
}

.pl{
width: 200px;
border: 1px solid #C4C4C4;
box-sizing: border-box;
border-radius: 10px;
padding: 12px 13px;
font-family: 'Roboto';
font-style: normal;
font-weight: 400;
font-size: 14px;
line-height: 16px;
background: url(./img/Polygon_up.png) 93% no-repeat; /*화살표 이미지 삽입*/
appearance: none;
text-align: left;
}
.pl:focus{
    border: 1px solid #9B51E0;
    box-sizing: border-box;
    border-radius: 10px;
    outline: 3px solid #F8E4FF;
    border-radius: 10px;
}

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

This Pen doesn't use any external JavaScript resources.