#container {
    position: static;
    height: 400px;
    border: 1px solid black;
    z-index: 1;
}
#box {
    position: absolute;
    background-color: rgb(215, 240, 240);
    border: 1px solid black;
    line-height: 80px;
    border-radius: 1px;
    width: 80px;
    height: 80px;
    text-align: center;
    font-family: Arial;
    color: black;
    z-index: 2;
    top: 0px;
    left: 0px;
}