* {
    margin: 0;
    padding: 0;
}

ul {
    list-style: none;
}

#slider {
    width: 800px;
    height: 700px;
    margin: 0 auto;
    position: relative;
}

#slider li {
    position: absolute;
    top: 0;
    left: 0;
}

#slide {
    width: 800px;
    margin: 0 auto;
    position: relative;
}

#slide img {
    position: absolute;
    top: 0;
    left: 0;
}