ul{
    list-style:none;
    display:flex;
    padding:0;
    margin-right:auto;
}

ul.transition {
    display:flex;
    position: absolute;
    z-index:11;
    height:100vh;
    width:100%;
    top:0;
    left:0;
    margin:0;
    pointer-events:none;
}
ul.transition li {
    transform:scaleY(0);
    background:#FF105F;
    width:20%;
}