JSFiddle - React, Tailwind, and code Playground

HTML

<body>

<span id="main_preload"></span>

<div id="basefound">
<header>
    <div class="container-fluid">
        <div class="row wrapper">
            <div class="col-md-1 slot0"></div>
            <div class="col-md-2 slack s1"></div>
            <div class="col-md-2 slack s2"></div>
            <div class="col-xs-12 col-md-2 h-logo"></div>
            <div class="col-md-2 slack s3"></div>
            <div class="col-md-2 slack s4"></div>
            <div class="col-xs-6 col-md-2 slot5">Официальный магазин</div>
            <div class="col-md-1 slot0"></div>
        </div>
    </div>
</header>
<div class="container-fluid">
    <div class="row">
        <div class="notice" >Get this</div>
    </div>
</div>
</div>
</body>

CSS

* {
    margin:0;
    padding:0;

}
#basefound {
    opacity:0;
}

#main_preload{
  position: fixed;
  width: 64px;
  height: 64px;
  left: 50%;
}

@media screen and (min-width: 768px) {
    body {
        background-color: #e0e0e0;
    }

    .wrapper {
        background-color: #293033;
        height: 4.5vmax;
        text-align: center;
        color: #e0e0e0;
        font-size: 1.6vmax;
        z-index: 100;
    }

    .h-logo {
        top: 0.7vmax;
        text-align: center;
    }

    .h-logo img {
        width: 90%;
    }
    .s1 img {
        width: 5vmax;
        padding-top: 1.1vmax;
        float: right;
    }
    .s2 img {
        width: 7vmax;
        padding-top: 1.1vmax;
    }
    .s3 img {
        width: 11vmax;
        padding-top: 1.3vmax;
    }
    .s4 img {
        width: 6.5vmax;
        padding-top: 1.2vmax;
        float: left;

    }
    .slot5, .slot6 {
        display: none;
    }
}
@media screen and (max-width: 768px)
{
    body {
        background-color: #e0e0e0;
    }
/* Header */
    .wrapper {
        background-color: #293033;
        color: #e0e0e0;
        z-index: 100;
    }

    .h-logo {
        text-align: center;
        padding-top: 3vmax;

    }
    .h-logo img {
        width: 50%;
    }
    .slot0 {
        display: none;
    }
    .slack {
        display: none;
    }
    .slot5 {
            text-align: center;
            padding-bottom: 2vmax;
            font-size: 2vmax;
    }
/* End Header */

}

JavaScript

var preload = $("#main_preload"),
    w = $(window).width() / 2 - 30,
    h = $(window).height() / 2 - 30;
preload.html('<p>+++++</p>');
preload.css({"top": h + 'px', "left": w + 'px'});
$(window).load(function () {
    setTimeout(function () {
        preload.animate({opacity: "0"}, 50, function () {
            preload.html("")
        });
        $("#basefound").animate({opacity: "1"}, 50)
    }, 250)
});