.c-overlay {
    background-color: #fff;
    height: 100vh;
    left: 0;
    opacity: 0;
    position: fixed;
    right: 0;
    top: 0;
    transition: all $transition-time ease-in;
    z-index: -1;
    display: none;


    &.c-overlay--is-open {
        opacity: 1;
        z-index: 40;
        display: block;
    }
}
