SOURCE

<div class="box">
  <span class="item">☺</span>
  <span class="item">☻</span>
</div>

.box{
    width: 100px;
    height: 100px;
    background-color: rgba(139, 138, 138, 0.548);
    border-radius: 10px;
    margin: 50px auto;
    padding: 10px;
    display: flex;
    justify-content: center;
    align-items:flex-end ;
}
span{
    font-size: 20px;
}