html,
body {
  height: 100%;
}
.hoja {
  color: #dcdce2;
  position: fixed;
  top: 30px;
  left: 34px;
  width: 80px;
  height: 80px;
  text-align: center;
  font-family: 'Titillium Web', sans-serif;
  font-size: 35px;
  line-height: 280px;
  -webkit-font-smoothing: antialiased;
  -webkit-user-select: none;
     -moz-user-select: none;
      -ms-user-select: none;
          user-select: none; 
  pointer-events: none;
  z-index: 10001;
}
.hoja:after,
.hoja:before {
  content: "";
  border-radius: 100%;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  -webkit-transform-origin: center center;
          transform-origin: center center;
}
.hoja:after {
  -webkit-box-shadow: inset 0 5px 0 rgba(248,219,73, 1), inset 5px 0 0 rgba(240,82,111, 1), inset 0 -5px 0 rgba(248,219,73, 1), inset -5px 0 0 rgba(240,82,111, 1);
          box-shadow: inset 0 5px 0 rgba(248,219,73, 1), inset 5px 0 0 rgba(240,82,111, 1), inset 0 -5px 0 rgba(248,219,73, 1), inset -5px 0 0 rgba(240,82,111, 1);
  -webkit-animation: rotar 8s -0.5s linear infinite;
}
.hoja:before {
  -webkit-box-shadow: inset 0 5px 0 rgba(63,255,255, 1), inset 5px 0 0 rgba(56,241,159, 1), inset 0 -5px 0 rgba(63,255,255, 1), inset -5px 0 0 rgba(56,241,159, 1);
          box-shadow: inset 0 5px 0 rgba(63,255,255, 1), inset 5px 0 0 rgba(56,241,159, 1), inset 0 -5px 0 rgba(63,255,255, 1), inset -5px 0 0 rgba(56,241,159, 1);
  -webkit-animation: rotarIz 8s -0.5s linear infinite;
}
@-webkit-keyframes rotar {
  0% {
    -webkit-transform: rotateZ(0deg) scaleX(1) scaleY(1);
  }
  50% {
    -webkit-transform: rotateZ(180deg) scaleX(0.72) scaleY(0.85);
  }
  100% {
    -webkit-transform: rotateZ(360deg) scaleX(1) scaleY(1);
  }
}
@-webkit-keyframes rotarIz {
  0% {
    -webkit-transform: rotateZ(0deg) scaleX(0.85) scaleY(0.72);
  }
  50% {
    -webkit-transform: rotateZ(-180deg) scaleX(1) scaleY(1);
  }
  100% {
    -webkit-transform: rotateZ(-360deg) scaleX(0.85) scaleY(0.72);
  }
}

/************************************************************************************
MEDIA QUERIES
*************************************************************************************/

/* for 639px or less */
@media screen and (max-width: 639px) {
  .hoja { 
    top: 8px; 
    left: 8px;
    width: 60px;
    height: 60px;
  }  
}

/* for 479px or less */
@media screen and (max-width: 479px) {
  .hoja { 
    top: 8px; 
    left: 8px;
    width: 50px;
    height: 50px;
  }  
}