body {
	background: #60D4C0;
}

header {
 	background: #131212;
 	color: #923737;
 	padding: 10px 10px 10px 10px;
 	text-align: center;
}

.cuerpo {
    /*background: none;
    display: block;
    margin: 0 auto;
    clear: both;
    width: 25%;
    padding-top: 50px;*/
    clear: both;
    width: 100%;
    height: auto;
    margin-left: 10px;
    padding-top: 30px;
}

.calculadora{
	border: 3px solid black;
	width: 340px;
}
.level {
	position: relative;
	width: 330px;
	height: 60px;
	background: #178D7E;
	padding: 5px 5px 5px 5px;
}

#mostrar {
	float: left;
	width: 248px;
	height: 50px;
	background: #355ED2;
	margin: 5px 5px 5px 5px;
	text-align: right;
	vertical-align: middle;
	line-height: 50px;
	border: 3px solid black;
}

.numero, .operador, .igual, .borrar,
.raiz, .elevado2, .elevadoy, .inverso {
	float: left;
	width: 50px;
	height: 50px;
	background: #355ED2;
	margin: 5px 5px 5px 5px;
	text-align: center;
	vertical-align: middle;
	line-height: 50px;
	border: 3px solid black;
	cursor: pointer;
} 

#cero {
	float: left;
	width: 115px;
	height: 50px;
	background: #355ED2;
	margin: 5px 5px 5px 5px;
	text-align: center;
	vertical-align: middle;
	line-height: 50px;
	border: 3px solid black;
}

.numero, .operador, .cero :before{
	color: red solid;
}