html {
    height: 100vh;
    background:rgb(77, 78, 78);
    /*background: linear-gradient(to right, rgb(237, 225, 250), rgb(248, 212, 212) );*/
}

body {
    display: flex;
    justify-content: center;
}

#main {
    margin-top: 90px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: linear-gradient(to right, rgb(252, 192, 192), rgb(203, 156, 253));

    padding: 20px;
    border-radius: 5px;
}

#display-container {
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    width: 240px;
    height: 55px;
    background-color: rgb(217, 217, 223);
    font-family: 'Courier New', Courier, monospace;
    align-items: flex-end;
    margin-bottom: 5px;
    padding: 10px 5px 10px 0px;
    border-radius: 3px;
    font-size: 50px;
}

#previous {
    font-size: 20px;
    margin-bottom: 5px;
}

#current {
    font-size: 30px;
    font-weight: bold;
}

button {
    padding: 20px;
    font-family: 'Courier New', Courier, monospace;
    font-size: 30px;
    border: none;
    border-radius: 3px;
    /*height: 70px;*/
    padding-top: 15px;
    padding-bottom: 15px;
}

button:hover {
    opacity: 0.75;
}

#button-container {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
}

.opn {
    background-color: rgb(252, 178, 109);
}

.row1 {
    display: flex;
    justify-content: space-evenly;
    gap: 5px;
}

#ac {
    padding-left: 11px;
    padding-right: 11px;
    background-color: rgb(248, 120, 120);
    font-size: 26px;
    padding-left: 13px;
    padding-right: 13px;
}

#delete {
    background-color: rgb(250, 250, 160);
    font-size: 22px;
    padding-right: 9px;
    padding-left: 10px;
}

.row5 {
    display: flex;
    justify-content: space-evenly;
    gap: 5px;
    width: 244px;
}

#num-0 {
    flex: auto;
}

#dec {
    padding-left: 19px;
    padding-right: 19px;
}

#op-int {
    padding: 5px;
    font-size: 25px;
    background-color: rgb(252, 178, 109);
}

#ans {
    background-color: rgb(129, 250, 170);
}