<div class="t_1">ТЕКСТ</div>
.t_1{
 background: #000;
  color: #0048BA ;
  font-size: 500%;
  padding:20px;
  
}
html {
  height: 100%;
}
body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100%;
  margin: 0;
}

  
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