The following thing worked for me :-
@{
var grid = new WebGrid(Model);
}
<div>
@grid.GetHtml(tableStyle: "table-comment",
columns: grid.Columns(
grid.Column("", "", @<text><div class="comment-box">
<div class="comment-head">
<div class="comment-name">
@item.FromUser
</div>
<div class="comment-date">
@item.DaysAgo
</div>
</div>
<div class="comment-content">
@item.Message
</div>
</div></text>)))
</div>