JSFiddle - React, Tailwind, and code Playground

HTML

<div class="adsprincipal">
        <div id="preloader">
            <div id="adspreload">
                <div class="positionads">
                    <div class="logoads"><img src="http://e-confiavel.com/images/econfiavel.png" alt="Logo É CONFIÁVEL?">
                        <div class="botao">Aguarde 5 segundos
                    </div>
                    </div>
                </div>
            </div>
          
            <div class="iframeads">
            <iframe src="https://tableless.com.br" width="100%" height="100%" frameborder="0"  scrolling="yes" allowfullscreen></iframe>
            </div>
          
            <div id="loader">
            </div>
            
        </div>
    </div>

CSS

*{
    padding: 0;
    margin: 0 auto;
}
#preloader {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: #fff000;
    z-index: 9999999;
    height: auto;
    width: 100%;
}

#adspreload {
    position: relative;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0px;
    background: #ff0000;
    z-index: 9999993;
    height: auto;
    width: 100%;
    display: inline-block;
    margin: 0px;
    padding: 0;
}
.iframeads {
    height: auto;
    position: absolute;
    width: 100%;
    z-index: 9999992;
    display: inline-block;
    float: left;
    margin-top: 0px;
    bottom: 0px;
    left: 0;
}
.logoads {
    position: relative;
    display: block;
    padding: 20px 7px 10px;
    max-width: 100%;
    height: auto;
}
.logoads img {
    width: 100%;
    height: 100%;
    position: relative;
    float: left;
}
.botao {
    color: #fff;
    position: relative;
    border: 1px #fff solid;
    padding: 9px;
    width: auto;
    float: right;
}
@media screen and (min-width: 320px) and (max-width: 3600px){
  .logoads img {
    width: auto;
    max-height: 55px;
    position: relative;
    top: 3px;
}
}
.positionads {
    position: relative;
    width: 100%;
    top: -6px;
    height: auto;
}
.iframeads iframe {
    top: auto;
    left: auto;
    width: 100%;
    float: left;
    margin-top: 0;
    display: inline-block;
    height: 100%;
}
.no-js #preloader,
.oldie #preloader {
	display: none;
}

#loader {
	position: absolute;
	top: 50%;
	left: 50%;
	width: 54px;
	height: 50px;
	margin-top: -25px;
	-webkit-animation: sk-rotateplane 1.2s infinite ease-in-out;
	animation: sk-rotateplane 1.2s infinite ease-in-out;
}