@media  (max-width: 650px)  {
    nav a span {
        display: none;
    }
    nav > a {
        width:auto;
    }
}
:root {
    --bgnav: gray;
    --bgbody: darkgray;
    --fcnav: yellow;
}
* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}
body {
    background:var(--bgbody);
    font-family: Arial, Helvetica, sans-serif;
    min-width: 400px;
}
html {
    background: var(--bgbody);
}
nav {
    overflow: hidden;
    background: var(--bgnav);
    color: var(--fcnav);
}
nav a img {
    width: 15px;
}
nav > * {
    width: 140px;
}
nav > *.fr, nav > *.fr.dropdown {
    float: right;
}
nav a {
    color: var(--fcnav);
    float: left;
    font-size: 16px;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
}
nav .dropdown {
  float: left;
  overflow: hidden;
}
nav .dropbtn:after {
    content: "\25bc"; /* Driehoekje naar beneden */
}
nav .dropdown .dropbtn {
  font-size: 16px;  
  border: none;
  outline: none;
  padding: 14px 16px;
  background-color: inherit;
  font-family: inherit;
  margin: 0;
  width: 100%
}
nav button {
    color: var(--fcnav)
}
nav a:hover, nav .dropdown:hover, nav .dropdown:hover button {
  background-color: var(--fcnav);
  color: var(--bgnav);
}
nav .fr.dropdown {
  min-width: 160px;
}
nav .dropdown-content {
  display: none;
  position: absolute;
  background-color: var(--bgnav);
  min-width: 160px;
  z-index: 1;
}
nav .dropdown-content a {
  float: none;
  color: var(--fcnav);
  padding: 12px 16px;
  text-decoration: none;
  display: block;
  text-align: left;
}
nav .dropdown:hover .dropdown-content {
  display: block;
}
nav a:any-link {
    color: var(--fcnav);
}
nav a:any-link:hover {
    color: var(--bgnav);
}
footer {
    position: fixed;
    bottom: 0;
    background: var(--bgnav);
    color: var(--fcnav);
    width: 100%;
    text-align: center;
    height: 1rem;
}
body > div {
    width: 1000px;
    max-width: 90%;
    margin: 0 auto;
    background: red;
}
body > nav {
    width: 1000px;
    max-width: 90%;
    margin: 0 auto;
}