@media only screen and (max-width : 800px){
    header nav{
        position: fixed;
        top: 70px;
        left: 150vw;
        height: 90vh;
        width: 100vw;
        z-index: 999;
        background-color: rgb(22, 22, 22);
        backdrop-filter: blur(2px);
        transition: all .2s linear;
    }
    header nav ul{
        flex-direction: column;
        gap: 20px;
        padding-top: 30px;
    }
    #nav_togleBtn{
        display: flex;
    }
}