.preload-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    height: 90%;
}
.preload-logo {
    display: block;
    margin: 0 auto;
    width: 250px;
}
.preload-message:after {
    content: 'Loading...';
    color: #4c4c4c;
    font-size: 18px;
    position: relative;
    top: 15px;
}
.loader:before,
.loader:after,
.loader {
    border-radius: 50%;
    width: 1em;
    height: 1em;
    -webkit-animation-fill-mode: both;
    animation-fill-mode: both;
    -webkit-animation: load7 1.8s infinite ease-in-out;
    animation: load7 1.8s infinite ease-in-out;
}
.loader {
    color: #4c4c4c;
    margin: 0 auto;
    position: relative;
    text-indent: -9999em;
    -webkit-transform: translateZ(0);
    -ms-transform: translateZ(0);
    transform: translateZ(0);
    -webkit-animation-delay: -0.16s;
    animation-delay: -0.16s;
}
.loader:before {
    left: -3em;
    -webkit-animation-delay: -0.32s;
    animation-delay: -0.32s;
}
.loader:after {
    left: 3em;
}
.loader:before,
.loader:after {
    content: '';
    position: absolute;
    top: 0;
}

@-webkit-keyframes load7 {
    0%,
    80%,
    100% {
        box-shadow: 0 2.5em 0 -1.3em;
    }
    40% {
        box-shadow: 0 2.5em 0 0;
    }
}
@keyframes load7 {
    0%,
    80%,
    100% {
        box-shadow: 0 2.5em 0 -1.3em;
    }
    40% {
        box-shadow: 0 2.5em 0 0;
    }
}