@media only screen and (max-width: 819px){
    /* burger */
    header .navigation {
        display: none;
    }
    .header {
        width: 95%;
        max-width: 800px;
    }
    header {
        margin-top: 0;
    }
    /* show burger menu */
    header .burger {
        -webkit-tap-highlight-color: transparent;
        position: absolute;
        top: 50%;
        right: 0;
        transform: translateY(-50%);
        display: block;
        border: none;
        background: none;
        cursor: pointer;
        z-index: 9999;
        align-items: center;
    }

    .logo {
        width: 100px;
    }

    header .burger:focus {
        outline: none;
    }

    header .bar {
        width: 35px;
        height: 5px;
        background-color: #ffffff;
        margin: 6px auto;
        transition: all 0.3s ease-in-out;
    }

    /* rotate bars on click */
    header .burger.active .bar:nth-of-type(1) {
        transform: rotate(-45deg) translate(-9px, 6px);
    }

    header .burger.active .bar:nth-of-type(2) {
        opacity: 0;
    }

    header .burger.active .bar:nth-of-type(3) {
        transform: rotate(45deg) translate(-8px, -8px);
    }

    /* show mobile navigation */
    .header .navigation.active {
        display: block;
        position: absolute;
        top: 70px;
        right:0;
        left:-2.6%;
        width: 99.99vw;
        background-color: #6EF100;
        z-index: 998;
        height: 35vw;
        max-height: 130px;
        animation: slideDown 0.3s ease;
    }
    @keyframes slideDown {
        0% {
            opacity: 0;
            transform: translateY(-10px);
        }
        100% {
            opacity: 1;
            transform: translateY(0);
        }
    }

    body .navigation.active {
        margin-left: 0;
        margin-right: 0;
    }
    header .navigation.active li {
        display: block;
        margin: 10px 0;
        font-size: 12px;
        border-bottom: 1px solid white;
        padding-bottom: 10px;
        padding-top: 5px;
        text-align: center;

    }
    ul {
    padding-inline-start: 0;
    }
    header {
        z-index: 50;
        background-color: transparent;
        width: 100vw;
        min-width: 0px;
        max-width: 800px;
        height: 70px;
        padding-top: 0px;
        position: fixed;
        top: 0px;
    }
    header .navigation.active a {
        color: white;
    }
    .phone_numb {
        display: none;
    }
    /* burger end */
}
@media (max-width: 320px) {
    .header .navigation.active {
        height: 130px;
    }
}