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

body {
    height: 100vh;
    background: #262626; /* Можно добавить background через url */

   /*  Свойства и значения для backgrounda с url ниже */

    /* background-repeat: no-repeat;
    background-position: center;
    background-size: cover; */
}

header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    background: #333333d9;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 3%;
    box-shadow: 0 5px 10px #000;
    backdrop-filter: blur(12px);
}

.signuplogin {
    display: flex;
}

header .logo {
    font-size: 20px;
    font-weight: 900;
    color: #ffffff;
    transition: .5s;
    margin-top: -2px;
    text-shadow: 0 0 10px #dddddd;
}

header .logo:hover {
    transform: scale(1.1);
}

header nav ul li {
    position: relative;
    float: left;
}

header nav ul li a {
    padding: 15px;
    color: #ffffff;
    display: block;
	transition: .1s;
    text-align: left;
}

header nav ul li a:hover {
    background: #000;
    color: #fff;
	
	transform: scale(1.03);
}

nav ul li ul {
    position: absolute;
    left: 0;
    width: 180px;
    background: #333333;
    display: none;
    transition: .5s;
}

nav ul li ul li {
    width: 100%;
    border: 1px solid rgba(0,0,0,.1);
}

nav ul li ul li ul {
    left: 180px;
    top: 0;
}

nav ul li:hover > ul {
    display: initial;
}




@media (max-width: 1360px) {
 header .logo {
   font-size: 15px;
   width: auto;
 }
 
 header nav ul li a {
    padding: 10px;
 }
 
 header {
	 padding: 0 3%;
 }
}

@media (max-width: 1263px) {
    .nav nav {
        display: none;
    }

    .logo a {
        display: none;
    }

    .signuplogin {
        display: none;
    }

    header {
        display: inline-block;
    }

    header nav ul li {
        float: none;
    }

    header nav ul li a:hover {
        background: rgb(124, 39, 204);
    }
}