.square {width: 150px;height: 150px; display:block;}



#blockRed {background-color: red; 
    position:relative;}
#blockRed2 {background-color: red; position:relative;}
#blockRed3 {background-color: red; position:relative; width: 60px;height:20px}
#blockRed4 {background-color: red; position:relative; width: 60px;height:20px}

#container {background-color: darkblue; margin: 0 auto; width: 300px; height: 300px }
body {background-image: url('ocean.jpg');background-size: 100%}

.return2{text-align: center}

a:link {color:white}
a:visited {color:white}