<div class="ui menu">
    <a href="t" class="item"><i class="large home basic icon"></i><span class="nav-text"> Accueil</span></a>
    <a href="" class="item"><i class="large camera retro icon"></i><span class="nav-text"> Créations</span></a>
    <a class="item"><span class="nav-text">Qui-suis je </span><i class="large help basic icon"></i></a>
</div>

.nav-text {
    vertical-align:middle;
}

parent-element {
  display: flex;
  align-items: center;
}

parent-element {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
}

{
  display:inline-block;
  vertical-align: 5px;
}

{
  display:inline-block;
  vertical-align: -5px;
}

.menu i.large.icon,
.menu i.large.basic.icon {
    vertical-align:baseline;
}

{
line-height:20px;
font-size:14px;
vertical-align:middle;
}

position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%,-50%);

.selector-class {
    float:left;
    vertical-align:middle;
}

vertical-align:baseline;

vertical-align:baseline;
vertical-align:-webkit-baseline-middle;