.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #000;
    z-index: 1050;
}
.dots{
    padding-top: 45vh;
}

.dots .dot {
    display: inline-block;
    width: 35px;
    height: 35px;
    margin: 0 10px;
    border-radius: 50%;
    background: #000;
    border: #e3e3e3 solid 5px;
    -webkit-animation: dot-dot-dot 1.4s linear infinite;
    animation: dot-dot-dot 1.4s linear infinite
}

.dots .dot:nth-child(2) {
    animation-delay: .2s
}

.dots .dot:nth-child(3) {
    animation-delay: .4s
}

@keyframes dot-dot-dot {
    0%, 100%, 60% {
        -webkit-transform: initial;
        -ms-transform: initial;
        transform: initial
    }
    30% {
        -webkit-transform: translateY(-25px);
        -ms-transform: translateY(-25px);
        transform: translateY(-25px)
    }
}