jklm313

*, *:after, *:before {
  margin: 0;
  padding: 0;
  position: relative;
  box-sizing: border-box;
  
  transition: transform .8s;
  transform-style : preserve-3d;
  }

jklm313

*, *::before, *::after {
  margin: 0;
  padding: 0;
  position: relative;
  box-sizing: border-box;
  }

html, body {
  height: 100%;
  }

jklm313

*, *:after, *:before {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
	position: relative;
	}
	html, body {
		height: 100%;
		}
	

jklm313

*,*:after,*before {
  margin: 0;
  padding: 0;
  
  position: relative;
  
  box-sizing: border-box;
  }

html, body {

jklm313

*, *:after, *:before {
  margin: 0;
  padding: 0;
  position: relative;
  box-sizing: border-box;
  }

body {
  max-width: 500px;
  margin: 0 auto;

jklm313

input:checked ~ .wrap {
  animation: 1s turn;
  animation-fill-mode: forwards;
  }

@keyframes turn {
  to {
    transform: rotate(.25turn);
    }
  }

jklm313

*, *:before, *:after {
  margin: 0;
  padding: 0;
  border-box: border-box;
  position: relative;
}

html {
  text-align: center;
  font-family: sans-serif;

jklm313

*, *:before, *:after {
	margin: 0;
	padding: 0;
	
	-moz-box-sizing: border-box;
	-webkit-box-sizing: border-box;
	-o-box-sizing: border-box;
	box-sizing: border-box;
	
	position: relative;

jklm313

*, *:before, *:after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  position: relative;
  }
  
html, body {
	height: 100%;
	}

jklm313

*, *:after, *:before {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
	position: relative; /* Please note, I'm adding position relative universally for brevity. Since now body has this property, the .fixed bar needs to be given a negative top positioning equal to its height, which is not neccessary if body is 'static'. */
	}

html, body {
	height: 100%;/* this is essential for the content to be contained inside the viewport and to enable scroll. */
	}