.select_category {
    position: relative;
}

#category {
    z-index: 2;
    left: 0;
    display:none;
    position: absolute;
    top: 100%;
    max-height: initial;
    min-width: 200px;
    list-style: none;
    padding: 0 20px;
    width: 100%;
}

.container{
    width: 90%;
}