.withplaceholder {
    display: inline-block;
    position: relative;
}

.withplaceholder input{
    position: relative;
}
    
.placeholder {
    display: block;
    font-size: 11px;
    color: #999;
    position: absolute;
    top: 13px;
    right: 20px; /* changed from 15px for codepen */
    transition: all .3s ease-in-out;
    text-align: right;
    z-index: 5;
    opacity: 0;
}

.placeholder.on {
    transition: all .3s ease-in-out;
    float: right;
}