[CSS] 세로 오픈 메뉴 예제

HTML 코드

    <input type="checkbox" id="menu_state">
    <nav>
      <label for="menu_state"><i class="fa"></i></label>
      <ul>
        <li data-content="1" class="active unread">
          <a href="javascript:void(0)">
            <i class="fa fa-inbox"></i>
            <span id="js-Exchange_Bank_Btn">Exchange_Rate</span>
          </a>
        </li>
        <li>
          <a href="javascript:void(0)">
            <i class="fa fa-heart"></i>
            <span>Favorites</span>
          </a>
        </li>
        <li>
          <a href="javascript:void(0)">
            <i class="fa fa-paper-plane"></i>
            <span>Sent</span>
          </a>
        </li>
        <li>
          <a href="javascript:void(0)">
            <i class="fa fa-pencil"></i>
            <span>Draft</span>
          </a>
        </li>
      </ul>
    </nav>

CSS

   input[type="checkbox"]#menu_state {
    display: none;
  }
  input[type="checkbox"]:checked ~ nav {
    width: 250px;
  }
  input[type="checkbox"]:checked ~ nav label[for="menu_state"] i::before {
    content: "\f053";
  }
  input[type="checkbox"]:checked ~ nav ul {
    width: 100%;
  }
  input[type="checkbox"]:checked ~ nav ul li a i {
    border-right: 1px solid #2f343e;
  }
  input[type="checkbox"]:checked ~ nav ul li a span {
    opacity: 1;
    transition: opacity 0.25s ease-in-out;
  }
  input[type="checkbox"]:checked ~ main {
    left: 250px;
  }
  nav {
    position: fixed;
    z-index: 9;
    top: 0;
    left: 0;
    bottom: 0;
    background: #383e49;
    color: #9aa3a8;
    width: 50px;
    font-family: 'Montserrat', sans-serif;
    font-weight: lighter;
    transition: all 0.15s ease-in-out;
  }
  nav label[for="menu_state"] i {
    cursor: pointer;
    position: absolute;
    top: 50%;
    right: -8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
    background: #fff;
    font-size: 10px;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 15px;
    width: 15px;
    border-radius: 50%;
    border: 1px solid #ddd;
    transition: width 0.15s ease-in-out;
    z-index: 1;
  }
  nav label[for="menu_state"] i::before {
    margin-top: 2px;
    content: "\f054";
  }
  nav label[for="menu_state"] i:hover {
    box-shadow: 0 10px 20px rgba(0,0,0,0.19), 0 6px 6px rgba(0,0,0,0.23);
  }
  nav ul {
    overflow: hidden;
    display: block;
    width: 50px;
    list-style-type: none;
    padding: 0;
    margin: 0;
  }
  nav ul li {
    border: 1px solid #2f343e;
    position: relative;
  }
  nav ul li.unread:after {
    content: attr(data-content);
    position: absolute;
    top: 10px;
    left: 25px;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 15px;
    height: 15px;
    border-radius: 50%;
    color: #fff;
    background: #ef5952;
    font-size: 8px;
  }
  nav ul li:not(:last-child) {
    border-bottom: none;
  }
  nav ul li.active a {
    background: #4c515d;
    color: #fff;
  }
  nav ul li a {
    position: relative;
    display: block;
    white-space: nowrap;
    text-decoration: none;
    color: #9aa3a8;
    height: 50px;
    width: 100%;
    transition: all 0.15s ease-in-out;
  }
  nav ul li a:hover {
    background: #4c515d;
    color: #fff;
  }
  nav ul li a * {
    height: 100%;
    display: inline-block;
  }
  nav ul li a i {
    text-align: center;
    width: 50px;
    z-index: 999999;
  }
  nav ul li a i.fa {
    line-height: 50px;
  }
  nav ul li a span {
    padding-left: 25px;
    opacity: 0;
    line-height: 50px;
    transition: opacity 0.1s ease-in-out;
  }
  main {
    position: absolute;
    transition: all 0.15s ease-in-out;
    top: 0;
    left: 50px;
  }
  main header {
    position: absolute;
    z-index: -1;
    top: 0;
    left: 0;
    right: 0;
    height: 400px;
    background: url("http://www.blueb.co.kr/SRC2/_image/01.jpg");
    background-size: cover;
    background-position: 50% 50%;
    background-repeat: no-repeat;
  }
  main section {
    box-shadow: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
    background: #fff;
    padding: 25px;
    font-family: helvetica;
    font-weight: lighter;
    padding: 50px;
    margin: 150px 75px;
    transition: all 0.15s ease-in-out;
  }
  main section:hover {
    box-shadow: 0 10px 20px rgba(0,0,0,0.19), 0 6px 6px rgba(0,0,0,0.23);
  }
  main section h1 {
    padding-top: 0;
    margin-top: 0;
    font-weight: lighter;
  }