.center
{
    display: block;
    text-align: center;
}

.offset-top-down
{
    margin: 10px 0px 10px 0px;
}

.spot-block{
    display: block;
    overflow: hidden;
    text-align: center;
    position: relative;
    z-index: 1;
    margin: 0px auto;
}
.spot{
    display: inline-block;
    margin: 0 1px;
    width: 300px;
    height: 250px;
    overflow: hidden;
}
.spot-block img,
.spot-block object,
.spot-block iframe{
    display:block;
    vertical-align:top;
    margin:0 auto;
}