.avis01 {
    background-color: red; 
    color: white; 
    height: 20px; 
    width: 20px; 
    padding: 0px; 
    border-radius: 10px; 
    display: inline-block; 
    text-align: center;
}

.efectparpad {
  animation-name: efectparpad ;
  animation-duration: 1s;
  animation-timing-function: linear;
  animation-iteration-count: infinite;

  -webkit-animation-name: efectparpad ;
  -webkit-animation-duration: 1s;
  -webkit-animation-timing-function: linear;
  -webkit-animation-iteration-count: infinite;
}

@-moz-keyframes efectparpad {  
  0% { opacity: 1.0; }
  50% { opacity: 0.0; }
  100% { opacity: 1.0; }
}

@-webkit-keyframes efectparpad  {  
  0% { opacity: 1.0; }
  50% { opacity: 0.0; }
   100% { opacity: 1.0; }
}

@keyframes efectparpad  {  
  0% { opacity: 1.0; }
   50% { opacity: 0.0; }
  100% { opacity: 1.0; }
}