html {
    height: 100%;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0;
    font-family: 'Arial', sans-serif;
    min-height: 100%;
}

img {
    position: fixed;
    width: 100%;
    height: 100%;
 }

 .image-filter {
    width: 100%;
	height: 100%;
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
	background: #000;
	opacity: 0.5;
 }

 .centered {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 32px;
    color: #ffffff;
    text-align: center;
}

.container {
    width: 100%;
    height: 100%;
}