.wrapper{
    width: 600px;
    margin: 0 auto;
}

#slider{
    width: 600px;
    height: 400px;
    overflow: hidden;
    margin: 15px auto;
}

#slider > img {
    width: 600px;
    height: 400px;
    float: left;
    display: none;
}

#slide_button {
    padding: 2px 2px;
    background-color: #F0F0F0;
    margin-top: 0px;
    /* text-decoration: none; */
    color: #666;
    font-family: "trebuchet ms", arial, "liberation sans";
    font-size: 14px;
    border: 2px solid;
    border-radius: 25px;
    text-align: center;
}

a.left
{
    float: left;
}

.left
{
    float: left;
}

a.right
{
    float: right;
}

.right
{
    float: right;
}