@import"https://fonts.googleapis.com/css2?family=Montserrat:wght@200;400&display=swap";body{font-family:Montserrat,sans-serif;font-size:24px;margin:0;padding:0}main{margin:25px auto;text-align:center;width:80%}input,select,button{display:block;margin:15px auto;padding:5px}input.error,select.error{border:1px solid red;outline:none!important}button{color:#ff0;font-weight:bolder;border-width:3px;background:#2e9aff;background:-moz-linear-gradient(-45deg,#2e9aff 0%,#030061 85%,#06035e 100%);background:-webkit-gradient(left top,right bottom,color-stop(0%,#2e9aff),color-stop(85%,#030061),color-stop(100%,#06035e));background:-webkit-linear-gradient(-45deg,#2e9aff 0%,#0d07a2 85%,#06035e 100%);background:-o-linear-gradient(-45deg,#2e9aff 0%,#0e098d 85%,#06035e 100%);background:-ms-linear-gradient(-45deg,#2e9aff 0%,#08029d 85%,#06035e 100%);background:linear-gradient(135deg,#2e9aff 0%,#0e08ad 85%,#06035e 100%);filter:progid:DXImageTransform.Microsoft.gradient(startColorstr="#2e9aff",endColorstr="#06035e",GradientType=1);width:87px}#operation{width:87px;color:#ff0;font-weight:bolder;border-width:3px;background:#2e9aff;background:-moz-linear-gradient(-45deg,#2e9aff 0%,#030061 85%,#06035e 100%);background:-webkit-gradient(left top,right bottom,color-stop(0%,#2e9aff),color-stop(85%,#030061),color-stop(100%,#06035e));background:-webkit-linear-gradient(-45deg,#2e9aff 0%,#0d07a2 85%,#06035e 100%);background:-o-linear-gradient(-45deg,#2e9aff 0%,#0e098d 85%,#06035e 100%);background:-ms-linear-gradient(-45deg,#2e9aff 0%,#08029d 85%,#06035e 100%);background:linear-gradient(135deg,#2e9aff 0%,#0e08ad 85%,#06035e 100%);filter:progid:DXImageTransform.Microsoft.gradient(startColorstr="#2e9aff",endColorstr="#06035e",GradientType=1);text-align:center}#values{border-style:ridge;border-width:3px}#result{color:#8b0000}body{background-color:#ffeec9;font-family:Lucida Sans,Lucida Sans Regular,Lucida Grande,Lucida Sans Unicode,Geneva,Verdana,sans-serif}h4{margin-bottom:0}header{height:auto;color:#8b0000}h1{color:#881304;text-shadow:1px 1px 2px black,0 0 25px blue,0 0 5px darkblue;text-align:center}