marc/index.css

@media screen and (max-width: 1200px) {

html {
font-size: 2em;
}

}

/*
* { border: 1px solid; }
/*
header  { background: #800000; }
nav     { background: #008000; }
section { background: #000080; }
/**/

* {
box-sizing: border-box;
//margin: 0;
//padding: 0;
}

html {
background: rgb(0,0,0);
color: rgb(160,160,160);
font-family: sans;
font-size: 1.25em;
}

body {
margin: 0 auto;
position: relative;
}

header {
background-image: url("debian.jpeg");
background-position: center;
background-size: cover;
padding: 1vh 1vw 0 1vw;
position: absolute;
width: 100%;
z-index: 1;
}

section {
min-height: 100vh;
padding: 7em 1vw 1vh 1vw;
position: absolute;
top: 0;
width: 100%;
}
section:not(:target) {
display: none;
}
section:target {
display: block;
}

nav {
display: flex;
flex-wrap: wrap;
}

img {
border: 1px solid;
border-color: rgb(192,192,192);
border-radius: 1em;
height: 8em;
}

a {
text-decoration: none;
}

nav a {
background: linear-gradient(rgba(64,64,64,1), rgba(64,64,64,0));
border-color: rgb(128,128,128);
border-radius: .5em;
border-style: solid;
border-width: 1px 1px 0 1px;
#color: rgb(128,128,0);
font-weight: bold;
padding: .25em .5em;
//transition: all .5s;
}
nav a.active {
background: linear-gradient(rgba(128,128,128,1), rgba(128,128,128,0));
}

a {
color: rgb(0,192,192);
}
a:hover {
color: rgb(192,0,0);
}
a:visited {
color: rgb(0,160,160);
}

table {
empty-cells: hide;
}
th,td {
border-radius: .2em;
}
th {
background: rgb(64,64,64);
color: rgb(128,128,0);
}
td {
background: rgb(48,48,48);
border: 1px solid;
border-color: rgb(192,192,192);
text-align: center;
}

.cards {
display: flex;
}
.card {
list-style: none;
margin: 0 1em;
text-align: center;
}
.card img {
border: none;
height: 4em;
}