make html pretty dark

gistfile1.txt

<style>
    html, body, button {
        margin: 0!important;
        padding: 0!important;
         background-color: black;
                  
                  color:white;
    }

    video {
        width: auto;
        max-width: 100%;
    }
    
    a:link {
  color: lightgreen;
  background-color: transparent;
  text-decoration: none;
}

a:visited {
  color: lightpink;
  background-color: transparent;
  text-decoration: none;
}

a:hover {
  color: red;
  background-color: transparent;
  text-decoration: underline;
}

a:active {
  color: yellow;
  background-color: transparent;
  text-decoration: underline;
}




.range-wrap {
  position: relative;
  margin: 0 auto 3rem;
}
.range {
  width: 100%;
}
.bubble {
  background: red;
  color: white;
  padding: 4px 12px;
  position: absolute;
  border-radius: 4px;
  left: 50%;
  transform: translateX(-50%);
}
.bubble::after {
  content: "";
  position: absolute;
  width: 2px;
  height: 2px;
  background: red;
  top: -1px;
  left: 50%;
}




</style>