html, body {
    font-family: sans-serif;
    box-sizing: border-box;
}

body {
    min-height: 100vh;
    margin:0;
    background-color: #eee;
}

user {
    border-radius: 100%;
    border: 3px solid gray;
    overflow: hidden;
    display: block;
    width: 70px;
    height: 70px;
    position: fixed;
    right: 30px;
    top: 10px;
    z-index: 1;
}

user img {
    width: 100%;
    height: 100%;
}

nav {
    display: flex;
    align-items: center;
    position: fixed;
    top:20px;
    left: 10px;
    padding-right:115px;
    width:calc(100% - 20px);
    height:50px;
    background-color: gray;
    z-index: 0;
    border-radius: 10px;
    box-sizing: border-box;
}

nav .nav-el {
    margin:10px;
    font-weight: bold;
    text-decoration: none;
    color: #ddd;
    transition-duration: 0.2s;
}

nav .nav-el:hover {
    color: white;
}

content {
    display: block;
    margin-top: 100px;
    margin-left: 50px;
    margin-right: 50px;
    margin-bottom:50px;
}