CSS两端对准

这是我改的文字对齐的那段代码

div.post div.post-body{
width:100%;
margin:5px 0 5px 0;
padding:5px 0 5px 0;
font-size:13px;
word-break:break-all;
text-align:left;
line-height:150%;
border-top: 1px solid black;
border-bottom: 1px solid black;
       text-align:justify;
       text-justify:inter-ideograph;
}