* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body, html {
    height: 100%;
    font-family: Arial, sans-serif;
}

.background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://www.uuuu.media/images/4U_1.jpg');
    background-size: cover;
    background-position: center;
    z-index: -1;
}
.background1 {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://www.uuuu.media/images/4U_2.jpg');
    background-size: cover;
    background-position: center;
    z-index: -1;
}
.background2 {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://www.uuuu.media/images/4U_3.jpg');
    background-size: cover;
    background-position: center;
    z-index: -1;
}
.background3 {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://www.uuuu.media/images/4U_4.jpg');
    background-size: cover;
    background-position: center;
    z-index: -1;
}
.background4 {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://www.uuuu.media/images/4U_5.jpg');
    background-size: cover;
    background-position: center;
    z-index: -1;
}
.background5 {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://www.uuuu.media/images/4U_6.jpg');
    background-size: cover;
    background-position: center;
    z-index: -1;
}
.background6 {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://www.uuuu.media/images/4U_7.jpg');
    background-size: cover;
    background-position: center;
    z-index: -1;
}
.background7 {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://www.uuuu.media/images/4U_8.jpg');
    background-size: cover;
    background-position: center;
    z-index: -1;
}
.background8 {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://www.uuuu.media/images/4U_9.jpg');
    background-size: cover;
    background-position: center;
    z-index: -1;
}
.background10 {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://www.uuuu.media/images/4U_10.jpg');
    background-size: cover;
    background-position: center;
    z-index: -1;
}
.background11 {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://www.uuuu.media/images/4U_11.jpg');
    background-size: cover;
    background-position: center;
    z-index: -1;
}
.background12 {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://www.uuuu.media/images/thankyou_bg.png');
    background-size: cover;
    background-position: center;
    z-index: -1;
}
.background13 {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://www.uuuu.media/images/4U_12.jpg');
    background-size: cover;
    background-position: center;
    z-index: -1;
}
.background14 {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://www.uuuu.media/images/4U_13.jpg');
    background-size: cover;
    background-position: center;
    z-index: -1;
}
.background15 {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://www.uuuu.media/images/4U_14.jpg');
    background-size: cover;
    background-position: center;
    z-index: -1;
}

.content {
    position: relative;
    z-index: 1;
    color: white;
    text-align: center;
    padding: 20px;
    height: 90%;
}