.modal{
    width: 100%;
    height: 100vh;
    position: fixed;
    top: 0px;
    background-color: #212e367b;
    display: none;
    justify-content: center;
    align-items: flex-start;
    padding-top: 100px;
    z-index: 99;
}

.modal--active{
    display: flex;
}