.buttons {
    display: flexbox;
    align-items: center;
    justify-content: center;
    flex: 50px 50px 50px 50px;
    margin-top: 0;
}
body {
    background-color: rgb(22, 22, 22);
}
.butt, .butt0 {
    width: 70px;
    height: 70px;
    font-family: Helvetica;
    font-weight: 400;
    font-size: 30px;
    margin: 5px 3px;
    border-radius: 50px;
    border: none;
    background-color: rgb(49, 49, 49);
    color: white;
    transition: opacity .15s;
}
.butt0 {
    justify-content:left;
    width: 150px;
    padding-left: 30px;
    text-align: left;
}
.lastrow {
    grid-template-columns: 180px 90px 90px;
}

.butt:hover, .butt0:hover {
    opacity: 80%;
}
.butt:active, .butt0:active {
    opacity: 50%;
}

.symbol {
    background-color: #FF9F0A;
}
.topbutt {
    color: black;
    background-color: #A5A5A5;
}
.calculator {
    align-items: center;
    justify-content: center;
    margin: auto;
    padding: 15px 10px 40px 10px;
    width: 320px;
    border-style: solid;
    border-color: black;
    border-radius: 30pt;
    background-color: black;
    height: auto;
}
.displaytext {
    color: white;
    font-family: Helvetica;
    font-size: 80px;
    margin-bottom: 0px;
    font-weight: lighter;
    width: 320px;
    height: 92px;
    overflow-x: auto;
    overflow-y: hidden;
    text-align: right;
}
.display {
    display: flex;
    justify-content: flex-end;
    margin-top: 35px;
    margin-right: 20px;
    margin-bottom: 0px;
}
.credits {
    text-align: center;
    color: white;
    font-family: "Courier New";
    font-weight: 900;
    font-size: 25px;
}