select 태그 화살표 커스터마이징

1. html 작성

<fieldset class="form--fieldset">
  <div class="form--selectArea">
    <select name="category" form="myForm">
      <option value="" selected>전체</option>
      <option value="">테스트1</option>
      <option value="">테스트2</option>
      <option value="">테스트3</option>
    </select>
    <svg role="presentation" class="icon--arrow" width="40" height="40" viewBox="0 0 40 40" fill="none"
         xmlns="http://www.w3.org/2000/svg">
      <path d="M24 17H15L19.6957 23L24 17Z" fill="#767676" />
    </svg>
  </div>
</fieldset>

2. select 태그 내 화살표 없애기

/*익스플로러 기본 화살표 없애기*/
select::-ms-expand {
  display: none;
}
/*화살표 기본 css 없애기*/
select {
  -o-appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
}

1. svg영역까지 selcet태그 영역 넓히기 + pointer

fieldset {
  position: relative;
  display: flex;
  padding: 0;
  margin: 0;
  border: 0;
  width: 135px;
}

.icon--arrow {
  position: absolute;
  right: 0;
  bottom: 0;
  display: block;
  padding: 0;
}

.form--selectArea select {
  z-index: 2;
  position: relative;
  background-color: transparent;
  border-color: none;
  border: none;
  box-shadow: none;
  width: 135px;
  height: 40px;
  cursor: pointer;
  outline: none;
}

---

참고자료
Select box with inline SVG arrow