Untitled

<html>

<head>
</head>

<body>

    <div id="Contenedor">
        <div id="Caja_Naranja"><img src="https://image.ibb.co/ddvh9m/600x400_Naranja.jpg" style="width: 100%"></div>
        <div id="Caja_Azul"><img src="https://image.ibb.co/gUoPN6/100x60_Azul.jpg"></div>
    </div>

</body>

<style>

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

   #Contenedor {
        position: relative;
        width: 75%;
        margin: 0 auto;
    }

   #Caja_Naranja {
        position: absolute;
        width:100%;
    }

   #Caja_Azul {
        position: absolute;
        right: 10%;
        top: 10%;
    }

</style>

</html>