@import url("https://fonts.googleapis.com/css?family=Lato");

* {
    box-sizing: border-box;
}

html,
body {
    font-family: 'Lato', sans-serif;
    margin: 0;
    min-height: 100vh;
    padding: 0;
}

    html:before,
    body:before {
        background: linear-gradient(to bottom right, rgb(255, 0, 0), rgb(150, 0, 0));
        height: 100vh;
        left: 0;
        position: fixed;
        top: 0;
        right: 0;
        width: 100vw;
    }

svg {
    cursor: pointer;
    height: 44px;
    width: 44px;
}

    svg path {
        fill: red;
    }

ol {
    list-style-type: none;
}

a[href] {
    color: #fff;
    position: relative;
    text-decoration: none;
}

    a[href]:hover:after {
        -webkit-transform: scaleX(1);
        transform: scaleX(1);
    }

    a[href]:after {
        content: '';
        position: absolute;
        top: 100%;
        height: 4px;
        background: #fff;
        left: 0;
        right: 0;
        -webkit-transition: -webkit-transform 0.15s;
        transition: -webkit-transform 0.15s;
        transition: transform 0.15s;
        transition: transform 0.15s, -webkit-transform 0.15s;
        -webkit-transform-origin: left;
        transform-origin: left;
        -webkit-transform: scaleX(0);
        transform: scaleX(0);
    }

.menu {
    position: relative;
    width: 250px;
}

.menu__content {
    color: navy;
    background:red; 
    margin: 0;
    padding: 0 0 25px 0;
    position:absolute  ;
    right: 100%;
    top: 0;
    width: 350px;
    z-index: 2;
}

.menu__toggle-label {
    height: 44px;
    left: 0;
    position: absolute;
    width: 44px;
}

    .menu__toggle-label svg {
        left: 0;
        position: absolute;
        top: 0;
        -webkit-transition: -webkit-transform 0.15s;
        transition: -webkit-transform 0.15s;
        transition: transform 0.15s;
        transition: transform 0.15s, -webkit-transform 0.15s;
        z-index: 2;
    }

        .menu__toggle-label svg:nth-of-type(2) {
            left: 250px;
            -webkit-transform: scale(0);
            transform: scale(0);
        }

.menu__toggle {
    opacity: 0;
    position: fixed;
}

    .menu__toggle:checked ~ .menu__toggle-label {
        background: #3366CC;
        height: 100vh;
        left: 0;
        position: fixed;
        top: 0;
        -webkit-transition: background 0.15s;
        transition: background 0.15s;
        width: 100vw;
    }

        .menu__toggle:checked ~ .menu__toggle-label svg:nth-of-type(1) {
            -webkit-transform: scale(0);
            transform: scale(0);
        }

        .menu__toggle:checked ~ .menu__toggle-label svg:nth-of-type(2) {
            left: 250px;
            -webkit-transform: scale(1);
            transform: scale(1);
            -webkit-transition: -webkit-transform 0.15s;
            transition: -webkit-transform 0.15s;
            transition: transform 0.15s;
            transition: transform 0.15s, -webkit-transform 0.15s;
            -webkit-transition-delay: 0.925s;
            transition-delay: 0.925s;
        }

    .menu__toggle:checked ~ .menu__content {
        -webkit-transform: translate(100%, 0);
        transform: translate(100%, 0);
    }

        .menu__toggle:checked ~ .menu__content .menu-item {
            -webkit-transform: translateX(0);
            transform: translateX(0);
            -webkit-transition: border-color 0.15s, -webkit-transform 0.15s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            transition: border-color 0.15s, -webkit-transform 0.15s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            transition: transform 0.15s cubic-bezier(0.175, 0.885, 0.32, 1.275), border-color 0.15s;
            transition: transform 0.15s cubic-bezier(0.175, 0.885, 0.32, 1.275), border-color 0.15s, -webkit-transform 0.15s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        }

            .menu__toggle:checked ~ .menu__content .menu-item:nth-of-type(1) {
                border-color: #9b59b6;
            }

                .menu__toggle:checked ~ .menu__content .menu-item:nth-of-type(1) a[href]:after {
                    background: #9b59b6;
                }

            .menu__toggle:checked ~ .menu__content .menu-item:nth-of-type(2) {
                border-color: #86e2d5;
            }

                .menu__toggle:checked ~ .menu__content .menu-item:nth-of-type(2) a[href]:after {
                    background: #86e2d5;
                }

            .menu__toggle:checked ~ .menu__content .menu-item:nth-of-type(3) {
                border-color: #f5ab35;
            }

                .menu__toggle:checked ~ .menu__content .menu-item:nth-of-type(3) a[href]:after {
                    background: #f5ab35;
                }

            .menu__toggle:checked ~ .menu__content .menu-item:nth-of-type(4) {
                border-color: #1e8bc3;
            }

                .menu__toggle:checked ~ .menu__content .menu-item:nth-of-type(4) a[href]:after {
                    background: #1e8bc3;
                }

            .menu__toggle:checked ~ .menu__content .menu-item:nth-of-type(5) {
                border-color: #e26a6a;
            }

                .menu__toggle:checked ~ .menu__content .menu-item:nth-of-type(5) a[href]:after {
                    background: #e26a6a;
                }

            .menu__toggle:checked ~ .menu__content .menu-item:nth-of-type(1) {
                -webkit-transition-delay: 0.225s, 0.875s;
                transition-delay: 0.225s, 0.875s;
            }

            .menu__toggle:checked ~ .menu__content .menu-item:nth-of-type(2) {
                -webkit-transition-delay: 0.275s, 0.875s;
                transition-delay: 0.275s, 0.875s;
            }

            .menu__toggle:checked ~ .menu__content .menu-item:nth-of-type(3) {
                -webkit-transition-delay: 0.325s, 0.875s;
                transition-delay: 0.325s, 0.875s;
            }

                .menu__toggle:checked ~ .menu__content .menu-item:nth-of-type(3) .menu-item:nth-of-type(1) {
                    -webkit-transition-delay: 0.375s, 0.875s;
                    transition-delay: 0.375s, 0.875s;
                }

                .menu__toggle:checked ~ .menu__content .menu-item:nth-of-type(3) .menu-item:nth-of-type(2) {
                    -webkit-transition-delay: 0.425s, 0.875s;
                    transition-delay: 0.425s, 0.875s;
                }

                .menu__toggle:checked ~ .menu__content .menu-item:nth-of-type(3) .menu-item:nth-of-type(3) {
                    -webkit-transition-delay: 0.475s, 0.875s;
                    transition-delay: 0.475s, 0.875s;
                }

            .menu__toggle:checked ~ .menu__content .menu-item:nth-of-type(4) {
                -webkit-transition-delay: 0.525s, 0.875s;
                transition-delay: 0.525s, 0.875s;
            }

                .menu__toggle:checked ~ .menu__content .menu-item:nth-of-type(4) .menu-item:nth-of-type(1) {
                    -webkit-transition-delay: 0.575s, 0.875s;
                    transition-delay: 0.575s, 0.875s;
                }

                .menu__toggle:checked ~ .menu__content .menu-item:nth-of-type(4) .menu-item:nth-of-type(2) {
                    -webkit-transition-delay: 0.625s, 0.875s;
                    transition-delay: 0.625s, 0.875s;
                }

                .menu__toggle:checked ~ .menu__content .menu-item:nth-of-type(4) .menu-item:nth-of-type(3) {
                    -webkit-transition-delay: 0.675s, 0.875s;
                    transition-delay: 0.675s, 0.875s;
                }

            .menu__toggle:checked ~ .menu__content .menu-item:nth-of-type(5) {
                -webkit-transition-delay: 0.725s, 0.875s;
                transition-delay: 0.725s, 0.875s;
            }

.menu__content > .menu-item {
    border-left: 8px solid transparent;
}

    .menu__content > .menu-item > a {
        line-height: 44px;
        min-width: 60px;
    }

.sub-menu {
    padding: 0 0 0 44px;
}

.menu-item {
    line-height: 44px;
    min-height: 44px;
    padding: 0 12px;
    -webkit-transform: translateX(-100%);
    transform: translateX(-100%);
}

    .menu-item .menu-item {
        -webkit-transform: translateX(-150%);
        transform: translateX(-150%);
    }