The overflow:hidden needs to be on ‘stars-active’ (the sized element) instead of ‘score-wrap’ (which never overflows.) You can use white-space: nowrap
to prevent the stars from wrapping to the next line within the hidden-overflow container.
.score {
display: block;
font-size: 16px;
position: relative;
overflow: hidden;
}
.score-wrap {
display: inline-block;
position: relative;
height: 19px;
}
.score .stars-active {
color: #EEBD01;
position: relative;
z-index: 10;
display: inline-block;
overflow: hidden;
white-space: nowrap;
}
.score .stars-inactive {
color: grey;
position: absolute;
top: 0;
left: 0;
-webkit-text-stroke: initial;
/* overflow: hidden; */
}
<link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.css" rel="stylesheet" />
<span class="score">
<div class="score-wrap">
<span class="stars-active" style="width:88%">
<i class="fa fa-star" aria-hidden="true"></i>
<i class="fa fa-star" aria-hidden="true"></i>
<i class="fa fa-star" aria-hidden="true"></i>
<i class="fa fa-star" aria-hidden="true"></i>
<i class="fa fa-star" aria-hidden="true"></i>
</span>
<span class="stars-inactive">
<i class="fa fa-star-o" aria-hidden="true"></i>
<i class="fa fa-star-o" aria-hidden="true"></i>
<i class="fa fa-star-o" aria-hidden="true"></i>
<i class="fa fa-star-o" aria-hidden="true"></i>
<i class="fa fa-star-o" aria-hidden="true"></i>
</span>
</div>
</span>
<span class="score">
<div class="score-wrap">
<span class="stars-active" style="width:50%">
<i class="fa fa-star" aria-hidden="true"></i>
<i class="fa fa-star" aria-hidden="true"></i>
<i class="fa fa-star" aria-hidden="true"></i>
<i class="fa fa-star" aria-hidden="true"></i>
<i class="fa fa-star" aria-hidden="true"></i>
</span>
<span class="stars-inactive">
<i class="fa fa-star-o" aria-hidden="true"></i>
<i class="fa fa-star-o" aria-hidden="true"></i>
<i class="fa fa-star-o" aria-hidden="true"></i>
<i class="fa fa-star-o" aria-hidden="true"></i>
<i class="fa fa-star-o" aria-hidden="true"></i>
</span>
</div>
</span>
<span class="score">
<div class="score-wrap">
<span class="stars-active" style="width:100%">
<i class="fa fa-star" aria-hidden="true"></i>
<i class="fa fa-star" aria-hidden="true"></i>
<i class="fa fa-star" aria-hidden="true"></i>
<i class="fa fa-star" aria-hidden="true"></i>
<i class="fa fa-star" aria-hidden="true"></i>
</span>
<span class="stars-inactive">
<i class="fa fa-star-o" aria-hidden="true"></i>
<i class="fa fa-star-o" aria-hidden="true"></i>
<i class="fa fa-star-o" aria-hidden="true"></i>
<i class="fa fa-star-o" aria-hidden="true"></i>
<i class="fa fa-star-o" aria-hidden="true"></i>
</span>
</div>
</span>
<span class="score">
<div class="score-wrap">
<span class="stars-active" style="width:0%">
<i class="fa fa-star" aria-hidden="true"></i>
<i class="fa fa-star" aria-hidden="true"></i>
<i class="fa fa-star" aria-hidden="true"></i>
<i class="fa fa-star" aria-hidden="true"></i>
<i class="fa fa-star" aria-hidden="true"></i>
</span>
<span class="stars-inactive">
<i class="fa fa-star-o" aria-hidden="true"></i>
<i class="fa fa-star-o" aria-hidden="true"></i>
<i class="fa fa-star-o" aria-hidden="true"></i>
<i class="fa fa-star-o" aria-hidden="true"></i>
<i class="fa fa-star-o" aria-hidden="true"></i>
</span>
</div>
</span>