h2 {color:green} 
li {color:blue}
h3 {color:olive}
p {color:purple}
h10 {color:purple}
body {background:black}

   h2 {
  position: relative;
  animation-name: jitterAnimation;
  animation-duration: .7s;
  animation-iteration-count: infinite;
}

@keyframes jitterAnimation {
  0%   {margin-left:0px}
  50% {margin-left:5px}
  100%   {margin-left:0px}
}

p {
  position: relative;
  animation-name: jitterAnimation;
  animation-duration: .4s;
  animation-iteration-count: infinite;
}

@keyframes jitterAnimation {
  0%   {margin-left:0px}
  50% {margin-left:11px}
  100%   {margin-left:0px}
}


body {
  filter: invert(100%);
}

html, body{
  margin: 0;
  padding: 0;
  height: 100%;
  width: 100%;
  
<iframe width="877" height="493" src="https://www.youtube.com/embed/us-4plMKd9U" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>

}
#camera, #camera--view, #camera--sensor, #camera--output{
    position: fixed;
    height: 100%;
    width: 100%;
    object-fit: cover;
}
#camera--view, #camera--sensor, #camera--output{
    transform: scaleX(-1);
    filter: FlipH;
}
#camera--trigger{
    width: 200px;
    background-color: black;
    color: white;
    font-size: 16px;
    border-radius: 30px;
    border: none;
    padding: 15px 20px;
    text-align: center;
    box-shadow: 0 5px 10px 0 rgba(0,0,0,0.2);
    position: fixed;
    bottom: 30px;
    left: calc(50% - 100px);
}
.taken{
    height: 50px!important;
    width: 50px!important;
    transition: all 0.5s ease-in;
    border: solid 3px white;
    box-shadow: 0 5px 10px 0 rgba(0,0,0,0.2);
    top: 20px;
    right: 20px;
    z-index: 2;
}