.slidemenu {
    position: relative;
    overflow: hidden;
    width: 100%;
    transition: height .35s ease;
}

.slidemenu-screen {
    position: absolute;
    top: 0;
    left: 100%;
    width: 100%;
    box-sizing: border-box;
    padding: 20px;
    transition: left .35s ease;
}

.slidemenu-screen.active {
    left: 0;
}

.slidemenu-screen.prev {
    left: -100%;
}

.slidemenu-screen ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.slidemenu-screen li + li {
    margin-top: 8px;
}

.slidemenu-screen a {
    text-decoration: none;
    color: inherit;
    cursor: pointer;
}

.slidemenu-back {
    display: inline-block;
    margin-bottom: 15px;
    background: none;
    border: none;
    font-size: 16px;
    cursor: pointer;
    color: #0073aa;
    padding: 0;
}