#avaleht-images {
    width: 100%;
    height: 400px;
    position: relative;
    overflow: hidden;
}

#avaleht-images div {
    width: 100%;
    height: 100%;
    position: absolute;
    left: 0;
    top: 0;
    background-size: cover;
    background-repeat: no-repeat;
    background-position: 50% 50%;
}

#avaleht-images .imgbox {
    animation-name: imgCrossfade;
    animation-timing-function: linear;
    animation-iteration-count: infinite;
    animation-duration: 20s;
    animation-direction: normal;
}

#back1 {
    background-image: url("images/ava2.jpg");
}

#back2 {
    background-image: url("images/ava1.jpg");
}

@keyframes imgCrossfade {
    0%   { opacity: 1; }
    40%  { opacity: 1; }
    50%  { opacity: 0; }
    90%  { opacity: 0; }
    100% { opacity: 1; }
}