theshell.ch/site/_sass/_header.scss

/*------- GLOBAL ------*/

header {
  text-align:center;
}

span {
  display:inline-block;
}

/*------- MENU ------*/

.menuDesktop {
  background-color: #131313;
  position: relative;
  text-align: justify;
}

.boxTitle {
  padding: .5em;
}

.title {
  color: green;
  padding: 20px 0px;
}

.boxItem {
  position: absolute;
  right: 1em;
  top: 0;
  height: calc(50px + 1em);
  display: inline-table;
}

.boxItem {
  div, code {
    display: table-cell;
    vertical-align: middle;
    color: #FFFFFF;
    font-weight: bold;
    text-decoration: none;
    font-size: 20px;
    padding: 0 5px;

    ul {
      /* TODO: if possible, insert a padding-top to move the submenu down such that
         the text of the first element starts at the bottom border of the .menuDesktop
      */
      display: none;
      position: absolute;
      list-style: none;
      margin-left: -10px;
      background-color: #131313;
      width: CALC(100% + 20px);

      li {
        color: #FFFFFF;
        margin: 10px;
      }

      li:hover {
        color: #66aa66;
      }
    }

    ul:hover {
      display: block;
    }
  }

  code{
    cursor: default;
  }

  div{
    cursor: pointer;
  }

  div:hover{
    color: #66aa66;

    ul {
      display: block;
    }
  }
}

.box-search{
  width: 350px;
  height: calc(50px + 1em);
  float:right;
  left: 60%;
}

.box-search input{
background-color: #131313;
    border: none;
    height: 20px;
    transition: 500ms;
    border-bottom: 2px solid white;
    position: absolute;
    top: calc(50% - 12px);
    margin-left:calc(18% + 22px);
    opacity:0;
}

.box-search img{
vertical-align: middle;
    cursor: pointer;
    width: 22px;
    position: absolute;
    left: calc(100% - 210px);
    top: calc(50% - 12px);
}

.anim-search{
  margin-left:0;
  opacity:1;
}