.fadein {
    position: relative;
}

.fadein img {
    position: absolute;
    top: 35px;
    left: 50%;
	transform: translateX(-50%);
    -webkit-animation-name: fade;
    -webkit-animation-iteration-count: infinite;
    -webkit-animation-duration: 8s;
    animation-name: fade;
    animation-iteration-count: infinite;
    animation-duration: 8s;
}

@-webkit-keyframes fade {
    0% {opacity: 0;}
    10% {opacity: 1;}
    25% {opacity: 1;}
    35% {opacity: 0;}
    100% {opacity: 0;}
}

@keyframes fade {
    0% {opacity: 0;}
    10% {opacity: 1;}
    25% {opacity: 1;}
    35% {opacity: 0;}
    100% {opacity: 0;}
}

#f1 {
    animation-delay: 0s;
}
#f2 {
    animation-delay: -6s;
}
#f3 {
    animation-delay: -4s;
}
#f4 {
    animation-delay: -2s;
}