<div class="box">
<span class="item left">left</span>
<span class="item center">center</span>
<span class="item right">right</span>
</div>
.box {
display: flex;
}
.item {
flex: 1;
}
.left {
text-align: left;
}
.center {
text-align: center;
}
.right {
text-align: right;
}