.slide-menu {
    position: fixed;
    width: 320px;
    max-width: 100%;
    height: 100vh;
    top: 0;
    right: 0;
    display: none;
    overflow: hidden;
    box-sizing: border-box;
    transform: translateX(100%);
    overflow-y: auto;
    z-index: 1000;
}

.slide-menu,
.slide-menu .slide-menu__slider {
    transition: transform .3s ease-in-out;
    will-change: transform
}

.slide-menu .slide-menu__slider {
    width: 100%;
    transform: translateX(0)
}

.slide-menu ul {
    position: relative;
    width: 100%;
    margin: 0;
    padding-left: 0;
    list-style: none
}

.slide-menu ul ul {
    position: absolute;
    top: 0;
    left: 100%;
    display: none
}

.slide-menu ul a {
    display: block
}

.slide-menu a {
    cursor: pointer
}