Hamburger Menu Toggle Animation 1 - SCSS

style.scss

*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}

body{
    background: black;
}

header{
    nav{
        position: relative;
        #toggle{
            position: absolute;
            top: 20px;
            left: 20px;
            padding: 10px;
            transition: .8s;
        
            span{
                position: relative;
                width: 36px;
                height: 4px;
                background: white;
                border-radius: 4px;
                display: block;
                margin-bottom: 8px;
                transition: .5s;
        
                &:nth-child(1){
                    transform-origin: left;
                }
                &:nth-child(2){
                    transform-origin: center;
                }
                &:nth-child(3){
                    transform-origin: left;
                    margin-bottom: 0;
                }
            }
        
            &.active{
                width: 55px;
                transition: .5s;
                z-index: 9;
                span{
                    background: white;
                }
                span:nth-child(1){
                    transform: rotate(45deg);
                    left: 3px;
                }
                span:nth-child(2){
                    transform: rotate(315deg);
                    right: 3px;
                }
                span:nth-child(3){
                    opacity: 0;
                    transform: scale(0);
                }
            }
        }
        ul#menu{
            position: fixed;
            top: 0;
            left: -300px;
            width: 300px;
            height: 100%;
            background: rgba(255,255,255, .1);
            z-index: 2;
            display: flex;
            justify-content: center;
            align-items: center;
            transition: .5s;
            display: flex;
            flex-direction: column;

            li{
                list-style: none;
                font-size: 2rem;
                line-height: 2;

                a{
                    color: white;
                    text-decoration: none;
                    &:hover{
                        color: tomato;
                    }
                }
            }
        }
        ul#menu.active{
            left: 0;
        }
    }
}
#toggle.active ul.menu{
    transform: translateX(-10%);
}