body{
    background-position: center center;
    background-repeat: no-repeat;
    background-size:cover;
    overflow: none;
}

#carroussel {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);        
    animation-duration: 5s;
    animation-name: fadein;
    animation-iteration-count:  infinite;
}
img {
    border-style: groove;   
    border-width: 3px;
    border-color:gray;      
}

@keyframes fadein {

    0% {
        opacity:0.01;
    }
    25%{
        opacity:0.8;
    }

    50% {
        opacity:1;
    }

    75% {
        opacity:0.8;
    }
    
    100%{
        opacity:0.05;
    }
  }