Koding giveaway removing absolutes

style.css

ul#items li {
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 8px 8px 8px 8px;
    box-shadow: 0 0 150px rgba(0, 0, 0, 0.32);
    float: left;
    height: auto;
    margin: 0 15px 15px 0;
    padding: 20px;
    position: relative;
    text-align: center;
    width: 160px;
}

.bottom {
    bottom: 0;
    left: 0;
    top: 150px;
    width: 100%;
}

#invite {
  margin-top: 10px;
}