html {
  background-color: #a9a9a9;
  font-family: Verdana, sans-serif;
}

body {
  width: 75%;
  margin-left: auto;
  margin-right: auto;
}

div.gallary {
  writing-mode: vertical-lr;
}

.img, .video {
  display: inline-block;
  border: solid medium black;
  margin: 1ch;
  vertical-align: top;
  width: 30ch;
  float: left;
  writing-mode: initial;
}

.img > * , .video > * {
  width: 100%;
  vertical-align: top;
}

.img > p , .video > p {
  margin: 0px;
  padding: 1ch;
  width: calc(100% - 2ch);
  border-top: solid medium black;
}

h1::after {
  width: 3ch;
  display: inline-block;
  content: "";
}

h1 {
  border-bottom: solid 2px black;
  padding-bottom: 0.2em;
  width: fit-content;
  font-weight: normal;
}

code {
  background-color: rgba(127, 127, 127, 0.5);
  border-radius: 0.3em;
  padding-left: 0.15em;
  padding-right: 0.15em;
}

a {
  color: #d8d8d8;
  text-decoration: underlined;
}

a.back {
  position: absolute;
  left: 1ch;
  top: 1ch;
  color: black;
}

a:hover {
  text-decoration: underline;
}

ul,ol {
  margin-block-start: 0.5em;
  margin-left: 1ch;
  border-left: solid medium black;
  background-color: rgba(127, 127, 127, 0.5);
  padding-top: 10px;
  padding-bottom: 10px;
  padding-left: 4ch;
  border-radius: 5px;
}