*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Open Sans", sans-serif;
}

.slide h1{
    color: var(--secondary-color);
}

.slide{
    height: 100%;
    width: 250px;
    position: absolute;
    background-color: #f2f2f2;
    transition: 0.5s ease;
    transform: translateX(-250px);
}

h1{
    font-size: 80px;
    font-weight: 800;
    text-align: right;
    padding: 10px 0;
    padding-right: 30px;
    pointer-events: none;
}

ul li {
    list-style: none;
}

ul li a {
    color: var(--main-brand-color);
    font-weight: 500;
    padding: 5px 0;
    display: block;
    text-transform: capitalize;
    text-decoration: none;
    transition: 0.2s ease-out;
}

ul li a p {
    font-size: 30px;
}

ul li:hover a {
    color: #fff;
    background-color: var(--main-brand-color);
}

input {
    display: none;
    visibility: hidden;
    -webkit-appearance: none;
}

.toggle {
    position: absolute;
    height: 30px;
    width: 30px;
    top: 20px;
    left: 15px;
    z-index: 1;
    cursor: pointer;
    border-radius: 2px;
    background-color: #fff;
    box-shadow: 0 0 10px rgba(0,0,0,0.3);
}

.toggle .common {
    position: absolute;
    height: 2px;
    width: 20px;
    background-color: var(--main-brand-color);
    border-radius: 50px;
    transition: 0.3s ease;
}

.toggle .top-line {
    top: 30%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.toggle .middle-line {
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.toggle .bottom-line {
    top: 70%;
    left: 50%;
    transform: translate(-50%, -50%);
}

input:checked ~ .toggle .top-line {
    left: 2px;
    top: 14px;
    width: 25px;
    transform: rotate(45deg);
}

input:checked ~ .toggle .bottom-line {
    left: 2px;
    top: 14px;
    width: 25px;
    transform: rotate(-45deg);
}

input:checked ~ .toggle .middle-line {
    opacity: 0;
    transform: translateX(20px);
}

input:checked ~ .slide {
    transform: translateX(0);
}

/**
https://www.youtube.com/watch?v=1TZjgQ0Osic&list=WL&index=1&t=510s
6:10 min
 */