*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Lucida Sans', 'Lucida Sans Regular', 'Lucida Grande', 'Lucida Sans Unicode', Geneva, Verdana, sans-serif;
    text-decoration: none;
    list-style: none;
}
body{
    background: url(bg.jpg) no-repeat ;
    background-size: cover;

}
header{
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0px 7%;
    background-color: rgb(4, 47, 187);
    z-index: 100;
    box-shadow: inset rgb(0, 0, 0,1);
}
header .logo{
    font-weight: bolder;
    color: rgb(255, 255, 255);
    font-size: 24px;
}
header .navbar ul li{
    position: relative;
    float: left;
}
header .navbar ul li a{
    font-size: 24px;
    color: rgb(255, 255, 255);
    padding: 20px;
    display: block;
}
header .navbar ul li a:hover{
    color: white;
    background-color: rgb(41, 82, 215);
}
header .navbar ul li ul{
    position: absolute;
    width: 200px;
    left: 0;
    background-color: rgb(4, 47, 187);
    display: none;
}
header .navbar ul li ul li{
    border-top: 1px solid black;
    width: 100%;
}
header .navbar ul li ul li ul{
    left: 200px;
    top: 0;
}
header .navbar ul li:hover > ul,
header .navbar ul li:focus-within > ul{
    display: initial;
}