#edicion {
  background-color: aqua;
}
#calculadora {
    width: 350px;
    border-style: outset;
    padding: 30px 0 30px 20px;
    margin: 0 auto;
    background-color: black;
   }

#display input {
    width: 300px;
    height: 30px;
    visibility: visible;
    border-style: inset;
    padding-left: 16px;
    font-size: 30px;
    font-weight: 400;
}

.tooltiptext {
    width: 180px;
    background-color: yellow;
    color: black;
    text-align: center;
    border-radius: 6px;
    padding: 5px 0;
    position: absolute;
    z-index: 1;
}
#display:hover .tooltiptext {
    visibility: visible;
}

#teclas button {
    width: 60px;
    height: 60px;
    color:blue;
    
    margin: 2px auto;
    border: 2px;
   
    border-style: outset;
    font-size: 20px;
    font-weight: 400;
    background-color: darkgray;
}

h1 { 
    color:white; 
    padding: 5px; 
    font-size: 20px;
	font-weight:100;
 }
em { 
    color:white; 
    padding: 5px; 
    font-size: 30px;
	font-weight:100;
	
 }

 @media (max-width: 767.98px){
    #calculadora{
        width: 315px;
    }

    #display input{
        width: 285px;
    }
}