#tester {width:100%;top:50%;position:absolute;background-color:rgba(0, 0, 0,0.2);color:#fff;font-size:12px;font-family:Arial;z-index:50000;padding:5px;}@media only screen and (min-width: 500px) {    #tester {    background-color:red;     }}@media only screen and (min-width: 600px) {    #tester {        background-color: blue;    }}@media only screen and (min-width: 700px) {    #tester {    background-color:red;     }}@media only screen and (min-width: 800px) {    #tester {        background-color: blue;    }}@media only screen and (min-width: 900px) {    #tester {    background-color:red;     }}@media only screen and (min-width: 1000px) {    #tester {        background-color: blue;    }}