*{
    margin:0;
    margin-top: 3%;
}
.row{
    width:514px;
    height:37.8px;
    margin-left: auto;
    margin-right: auto;
}
.cont {
    margin-top: 3%;
}
.inputcalc {
    font-family: Montserrat;
    font-size: 20px;
    background-color: var(--var-body-bg);
    border: none;
    color: var(--var-body-fc);
}
span{
        width: 24%; 
        font-size: 18px;
        line-height: 37px;
        border-right: 1px solid var(--var-body-fc);
        border-top: 1px solid var(--var-body-fc);
        color: var(--var-body-fc);
        font-family: Montserrat;
        cursor: pointer;
        text-align: center;
        display: inline-block;
}
span:hover{
    color: var(--var-body-fc);	
    background:var(--var-body-fc-invert);
    opacity:0.6;
}