中央寄せで文字列を左寄せにする方法
<div class="box">
<p class="text">
texttexttext<br/>
texttexttexttexttexttext<br/>
texttexttexttext</p>
</div>
.box {
margin: auto;
text-align: center;
display: block;
}
.box .text {
text-align: left;
display: inline-block;
}