my excerpt is not aligned properly

php coding
<div class=”excerpt”><?php the_excerpt();?></div>
css
.pin .excerpt
{
font-family: ‘Muli’, sans-serif;

text-align: center;
font-weight: normal;
font-size: 15px;
color: #767575;
}

the excerpt is look like given below
Another potrait session from the
island country I always like to
shoot the couples ,the people
there was very kind and nice…..