body {
  margin-bottom: 10%;
}
html {
  text-align: center;
  font-family: 'Tourney', cursive;
  font-size: 100%;
  background-image: url('https://image.freepik.com/free-photo/glowing-shimmering-stars-space-abstract-background_250994-1378.jpg');
  background-attachment: fixed;
}
#gallery {
  background: rgba(90,90,110,0.3);
  color: silver;
  width: 80%;
  padding: 2em;
  padding-top: 1em;
  margin: 1em auto;
}
img {
  width: 100%;
  margin-top: 1em;
  margin-bottom: 1em;
  border: 0.5px double gold;
}


h1{
  margin-top: 0;
}

h2{
  font-size:0.9em;
  text-transform: uppercase;
}

hr{
  margin: 1.5em 0;
  border: 0;
  border-top: 2px double black;
}

button, img {
  border-style: solid solid solid solid;
  border-width: 1px .5px .5px 1px;
  border-color: silver grey grey silver;
}
button{
  display: inline-block;
  border-radius: 5%;
  font-size: 0.9em;
  padding: 0.7em;
  background: rgba(102,133,222,0);
  color: silver;
  font-family: 'Audiowide', cursive;
  margin: 0.5em 0.25em 0;
  text-align: center;
}

button:hover, button:focus{
  opacity: 0.3;
  cursor: pointer;
}

button:active{
  opacity: 0.4;
}

img:-webkit-full-screen, img:-moz-full-screen, img:-ms-fullscreen, img:full-screen, img:fullscreen{
  max-width:none;
}

#buttongroup {
  display: flex;
  justify-content: space-around;
}