.c-t,
.c-t span,
.c-b,
.c-b span {
    background:transparent url(/img/site/corners.gif) 0 0 no-repeat;
    display:block;
    height:5px;
    line-height:0;
    font-size:1%;
}
.c-t,
.c-b {
    background-color:#f1f1f1;
}
.c-t{
    background-position:0 -10px;
}
.c-b{
    background-position:0 -15px;
}
.c-t span {
    background-position:100% 0;
}
.c-b span {
    background-position:100% -5px;
}