body {
    font-size: 16px;
    color: black;
}

div {
    font-size: 1.2em;
}

h1{
    font-size: 2em;
    text-align: center;
    color: white;
    padding: 80px;
    box-sizing: border-box;
}

.padre {
    width: 1200px;
    height: 1200px;
    background-color: rgb(0,0,0);
    margin: auto;
    position: relative;
}

.hijo1 {
    width: 300px;
    height: 300px;
    background-color: white;
    position: absolute;
    top: 20%;
    left: 10%;
}

.hijo2 {
    width: 300px;
    height: 300px;
    background-color: white;
    position: absolute;
    top: 20%;
    right: 10%;
}

.hijo3 {
    width: 300px;
    height: 300px;
    background-color: white;
    position: absolute;
    bottom: 20%;
    left: 10%;
}

.hijo4 {
    width: 300px;
    height: 300px;
    background-color: white;
    position: absolute;
    bottom: 20%;
    right: 10%;
}

.hijo5 {
    width: 90%;
    height: 90%;
    background-image: url('tiburon.jpg');
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    opacity: 0.5;
    position: absolute;
    top: 5%;
    left: 5%;
}