*{margin:0 auto;text-align:center}.result{height:70px;background-color:#fff;width:70%;color:#000;border-radius:3%}.result p{font-size:40px;margin:5px}.calculator-wrapper{max-width:350px;margin-top:50px;padding:10px;border-radius:1em;background-color:#64278f;border:2px solid black}.btn-row{display:block;background-color:#64278f}button{width:15%;height:60px;font-size:30px;border-radius:15%;background-color:#fff;margin:2px 2px 5px 10px;cursor:pointer}.btn2{background-color:#000;color:#fff}@media (max-width:800px){.calculator-wrapper{max-width:auto}}