<nav>
    <div class="nav_wrap">
      <div class="nav_left">
        <h1>
          <a href="#">
            <img src="https://via.placeholder.com/24x28">
          </a>
        </h1>
        <ul>
          <li><a href="#">탐색</a></li>
          <li><a href="#">e스포츠</a></li>
          <li><a href="#">음악</a></li>
        </ul>
        <div class="more">
          <a href="#">더보기</a>
        </div>
      </div>

      <div class="nav_center">
        <div class="search_wrap">
          <input type="text" placeholder="검색">
          <button class="btn_search"></button>
        </div>
      </div>

      <div class="nav_right">
        <div class="mark_wrap">
          <i class="icon_mark"></i>
          <span class="alarm">44</span>
        </div>
        <a href="#" class="btn_login">로그인</a>
        <a href="#" class="btn_purple">회원가입</a>
        <button class="btn_profile"></button>
      </div>
    </div>
  </nav>
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  width: 100%;
  height: 100%;
}

body {
  background-color: #0e0e10;
}

ol, ul {
  list-style: none;
}

a {
  text-decoration: none;
  color: #fff;
}

img {
  vertical-align: top;
}

input {
  outline: none;
  border: none;
}

button {
  outline: none;
  border: none;
  background: transparent;
}

h1, h2, h3, h4, h5, h6, p, span, input, button, a {
  color: #fff;
}

.btn_purple {
  background-color: #9147ff;
  color: #fff;
}

.font_purple {
  oclor: #9147ff;
}




/* header */
nav {
  position: fixed;

  width: 100%; /* fixed에는 적용 기준이 되는 영역이 필요 */
  height: 50px;
  background-color: #0e0e10;
  padding: 0 15px;
    
  min-width: 1340px;
}

nav .nav_wrap {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
}

nav .nav_wrap .nav_left {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-start;
  align-items: center;
}

nav .nav_wrap .nav_left .logo a img {
  width: 24px;
  height: 28px;
}

nav .nav_wrap .nav_left ul {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-start;
  align-items: center;
}

nav .nav_wrap .nav_left ul li {
  height: 50px;
  font-size: 20px;
  padding: 0 20px;
}

nav .nav_wrap .nav_left ul li a {
  display: block;
  width: 100%;
  height: 100%;
  line-height: 50px;  
}

nav .nav_wrap .nav_left ul li:first-child {
  padding-right: 0;
}

nav .nav_wrap .nav_left ul li:first-child a:after {
  position: relative;

  display: inline-block;
  content: "";
  width: 1px;
  height: 30px;
  background-color: grey;

  margin-left: 20px;

  top: 7px;
} 

nav .nav_wrap .nav_left .more a {
  display: block;
  height: 50px;
  font-size: 20px;

  line-height: 50px;
  padding-left: 20px;
}

nav .nav_center {
  /* flex의 영향을 받지 않음 */
  position: absolute; 
  left: 50%;
  transform: translateX(-50%);
}

nav .nav_center .search_wrap {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;

  width: 380px;
  height: 36px;
  overflow: hidden;
  border-radius: 5px;
}

nav .nav_center .search_wrap input {
  width: calc(100% - 34px);
  height: 100%;
  background-color: gray;
}

nav .nav_center .search_wrap .btn_search {
  width: 34px;
  height: 100%;
  background-color: darkgray;
}

nav .nav_right {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  align-items: center;
}

nav .nav_right .mark_wrap {
  position: relative;
}

nav .nav_right .mark_wrap .icon_mark {
  display: block;
  width: 20px;
  height: 20px;
  background-color: yellow;

  cursor: pointer;
}

nav .nav_right .mark_wrap .alarm {
  position: absolute; 
  border-radius: 15px;
  background-color: red;
  color: #fff;
  font-size: 14px;

  padding: 2px 8px 2px;

  top: -8px;
  right: -15px;
}

nav .nav_right .btn_login {
  width: 53px;
  height: 30px;
  background-color: grey;
  border-radius: 5px;
  margin-left: 20px;  
  
  text-align: center;
  line-height: 30px;
  font-size: 12px;
}

nav .nav_right .btn_purple {
  width: 60px;
  height: 30px;
  border-radius: 5px;
  margin-left: 10px;  

  text-align: center;
  line-height: 30px;
  font-size: 12px;
}

nav .nav_right .btn_profile {
  width: 20px;
  height: 20px;
  background-color: #fff;
  margin-left: 10px;  

  cursor: pointer;
}

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

This Pen doesn't use any external JavaScript resources.