overflow:hidden on inline-block adds height to parent

I had this issue when building a horizontal slider. I fixed it with vertical-align:top on my inline-block elements.

ul {
    overflow-x: scroll;
    overflow-y:hidden;
    white-space: nowrap;
    -webkit-overflow-scrolling: touch;
}

ul&::-webkit-scrollbar {
    display: none;
}

li {
    display: inline-block;
    vertical-align: top;
    width: 75px;
    padding-right: 20px;
    margin:20px 0 0 0;
}