.filebox label {
    display: inline-block;
    padding: .2em .25em;
    color: rgb(0, 0, 0);
    font-size: inherit;
    line-height: normal;
    vertical-align: middle;
    background-color: #e0e0e0;
    cursor: pointer;
    border: 1px solid #696969;
    border-bottom-color: #696969;
    border-radius: .25em;
  }
  
  .filebox input[type="file"] {  /* 파일 필드 숨기기 */
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip:rect(0,0,0,0);
    border: 0;
  }

  .contextmenu {
    display: none;
    position: absolute;
    width: 200px;
    margin: 0;
    padding: 0;
    background: #FFFFFF;
    border-radius: 5px;
    list-style: none;
    box-shadow:
      0 15px 35px rgba(50,50,90,0.1),
      0 5px 15px rgba(0,0,0,0.07);
    overflow: hidden;
    z-index: 999999;
  }
  
  .contextmenu li {
    border-left: 3px solid transparent;
    transition: ease .2s;
  }
  
  .contextmenu li a {
    display: block;
    padding: 5px;
    color: #B0BEC5;
    text-decoration: none;
    transition: ease .2s;
  }
  
  .contextmenu li:hover {
    background: #CE93D8;
    border-left: 3px solid #9C27B0;
  }
  
  .contextmenu li:hover a {
    color: #FFFFFF;
  }