style.css

* {
    padding: 0;
    margin: 0;
    text-decoration: none;
    list-style: none;
    box-sizing: border-box;
}

body {
    font-family: 'Trebuchet MS', 'Lucida Sans Unicode', 'Lucida Grande', 'Lucida Sans', Arial, sans-serif;
    background-image: url("images/car.jpg");
    background-repeat: no-repeat; 
    background-position: center;
    background-attachment: fixed;       
    background-size: cover;
}

header {
    width: 100%;
    height: 80px;
    background-color: #e96868;
}

label.logo {
    color: #fff;
    font-size: 35px;
    line-height: 80px;
    padding: 0 100px;
    font-weight: 600;
    font-style: italic;
}

nav ul {
    float: right;
    margin-right: 20px;
}

nav ul li {
    display: inline-block;
    line-height: 80px;
    margin: 0 5px;
}

nav ul li a {
    color: #fff;
    font-size: 19px;
    padding: 7px 13px;
    border-radius: 15px;
    text-transform: uppercase;
}

a:hover {
    background-color: rgb(231, 150, 150);
    transition: .5s;
}

.checkbtn {
    font-size: 30px;
    color: #fff;
    float: right;
    line-height: 80px;
    margin-right: 40px;
    cursor: pointer;
    display: none;
}

#check {
    display: none;
}

@media (max-width: 952px) {
    label.logo {
        font-size: 30px;
        padding-left: 50px;
    }

    nav ul li a {
        font-size: 16px;
    }
}

@media (max-width: 858px) {
    .checkbtn {
        display: block;
    }

    ul {
        position: fixed;
        width: 100%;
        height: 100vh;
        background-color: #000;
        top: 80px;
        left: -100%;
        text-align: center;
        transition: all .5s;
    }

    nav ul li {
        display: block;
        margin: 50px 0;
        line-height: 30px;
    }

    nav ul li a {
        font-size: 18px;
        color: #fff;
    }

    a:hover {
        background-color: rgb(231, 150, 150);
    }

    #check:checked ~ ul {
        left: 0;
    }
}