.pre-loader {
    position: fixed;
    height: 100vh;
    width: 100%;
    display: flex;
    align-content: center;
    justify-content: center;
    align-self: center;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
}

.pre-loader div {
    height: 48px;
    width: 175px;
    margin: auto;
    align-self: center;
}

.pre-loader div img {
    width: 175px;
    height: auto;
    margin: auto;
}

.pre-loader div span.loader {
    width: 100%;
    height: 4.8px;
    display: inline-block;
    position: relative;
    background: #FF33331A;
    overflow: hidden;
}

.pre-loader div span.loader::after {
    content: '';
    width: 55px;
    height: 4.8px;
    background: #F33;
    position: absolute;
    top: 0;
    left: 0;
    box-sizing: border-box;
    animation: hitZak .75s linear infinite alternate;
}

@keyframes hitZak {
    0% {
        left: 0;
        transform: translateX(-1%);
    }
    100% {
        left: 100%;
        transform: translateX(-99%);
    }
}