:root {
  --img-w: 3960;
  --img-h: 3072;
  --bg-w: max(100vw, 100vh * var(--img-w) / var(--img-h));
  --bg-h: max(100vh, 100vw * var(--img-h) / var(--img-w));
}
body {
    margin: 0;
    overflow: hidden;
}
.bg {
  display: flex;
  background-image: url('bg.png');
  background-size: cover;
  background-position: center;
  width: 100vw;
  height: 100vh;
}
.left {
  flex: 10;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-sizing: border-box;
}
.right {
  display: flex;
  flex: 1;
  flex-direction: column;
  align-items: flex-end;
  text-align: right;
  background-color: rgba(0, 0, 0, 0.4); 
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
}
.latex4000Webring {
    font-family: "Times New Roman", Times, serif;
    font-size: 2vw;
    margin-right: 1.5vw;
    margin-left: 1.5vw;
    margin-bottom: 1.5vw;
    
}
.latex4000Webring a:link {
    color: #FFF;
}
.latex4000Webring a:visited {
    color: #9a9999;
}
.logo-link img {
    width: calc(var(--bg-w) * 0.18);
    margin-top: 0.8vw; 
    margin-right: 0.5vw;
    margin-left: 1vw;
}
.logo-link .logo-hover {
    display: none;
}
.logo-link:hover .logo {
    display: none;
}
.logo-link:hover .logo-hover {
    display: inline-block;
}