.modal_custom{
    position:fixed;
    top:calc(100vh + 100px);
    left:0px;
    overflow:hidden;
    width:100vw;
    height: 100vh;
    background-color:white;
    transition: top 1s;
    z-index:9002;
    overflow:scroll;
    margin-bottom:500px;
    /*border:1px solid red;*/
}

.modal_custom .content{
    padding-bottom:calc(100vh - 100svh);
}

.modal_custom.show{
    top:0px;
}