:root {
  --x-color-a: #666bbb;
  --x-color-a-hover: #222777;
  --x-color-bg: #dbc1c120;
  --x-color-main: #d7e1f1;
}

a {
  color: var(--x-color-a);
}

a:hover {
  color: var(--x-color-a-hover);
}

body {
  background-color: var(--x-color-bg);
}

h1 {
  color: var(--x-color-main);
  font-size: 3em;
  text-align: center;
}

h2 {
  color: var(--x-color-main);
  font-size: 2.5em;
  text-align: center;
}

h3 {
  color: var(--x-color-a);
  font-size: 2em;
  margin: 0;
  text-align: center;
}

hr {
  border: 0;
  border-top: 1px solid var(--x-color-main);
  display: block;
  height: 1px;
  margin: 1em 0;
  padding: 0;
  width: 100%;
}

.a_site {
  text-decoration: none;
}

.a_site:hover h2 {
  color: var(--x-color-a-hover);
}

.a_site p {
  border-radius: 10% 0% 10% 10%;
  font-size: 1.1em;
  height: 300px;
  max-width: 500px;
  overflow: hidden;
  text-align: right;
  width: 100%;
}

.a_site p:before {
  --polygon_img: 20% 0%, 100% 80%, 100% 100%, 0% 100%, 0% 0%;
  clip-path: polygon(var(--polygon_img));
  content:"";
  filter: grayscale(100%);
  float:left;
  height: 100%;
  shape-outside: polygon(var(--polygon_img));
  transition: transform 1s;
  width: 100%;
}

.a_site:hover p {
  border-radius: 10%;
}

.a_site:hover p:before {
  clip-path: none;
  filter: grayscale(0%);
  shape-outside: none;
  transform: scale(1.1);
}

.text_center {
  text-align: center;
}

#sites {
  align-items: center;
  display: flex;
  flex-direction: column;
  margin-left: auto;
  margin-right: auto;
  padding-top: 1%;
  padding-bottom: 2%;
  width: 90%;
}

#cailloux_xelaco_fr:before {
  background: url(https://hiboux.xelaco.fr/imageAleatoire?filtre=SP) center/cover;
}

#figs_xelaco_fr:before {
  background: url(https://figs.xelaco.fr/pictures/photos/PXL_20221126_130811847.MP.jpg) center/cover;
}

#hiboux_xelaco_fr:before {
  background: url(https://hiboux.xelaco.fr/imageAleatoire) center/cover;
}

#nana_xelclc_fr:before {
  background: url(https://xeliku.xelclc.fr/assets/nana.png) center/cover;
}

#xeliku_xelclc_fr:before {
  background: url(https://xeliku.xelclc.fr/assets/screenshot_lignes.png) center/cover;
}