@import url('https://fonts.cdnfonts.com/css/seven-segment');                

body {
background: linear-gradient(rgba(42, 123, 155, 1) 0%, rgba(87, 199, 133, 1) 50%, rgba(237, 221, 83, 1) 100%);
background-attachment: fixed;
background-repeat: no-repeat;
display: flex;

}

.content-container {
    margin: auto;
    margin-top: 200px;
    background-color: aliceblue;
    opacity: 50%;
    width: 500px;
    border-radius: 50px;
    padding: 30px;
    display: grid;
    height: 500px;
    padding-bottom: 60px;
    border: solid 3px;

}

#screen {
    width: 90%;
    height: 90px;
    margin-bottom: 10px;
    border-radius: 25px;
    font-size: 300%;
    font-family: 'Seven Segment', sans-serif;
    padding-left: 20px;
    padding-right: 20px;
    border: none;
    text-align: end;
    border: solid 3px;
}

.button {
    height: 60px;
    width: 22%;
    font-family: 'Seven Segment', sans-serif;
    font-weight: 900;
    text-align: center;
    font-size: 180%;
    border-radius: 20px;
    border: solid 3px;
    height: 6rem;
    margin: 5px;
}

.row {
    width: 100%;

}
.fin {
    background-color: rgb(9, 255, 173);
}