body {
    background-color: #6075A2;
    border: 1px solid black;
    display: flex;
    flex-direction: column;
    min-height: 99.5vh;
}
main {
    flex: 1;
}
header {
    font-family: Caveat;
    font-size: 55px;
    font-weight: bolder;
    width: fit-content;
    margin: 20px auto;
    text-decoration: underline;
    color: #f0d10f;
}
#display-screen {
    /* grid-area: row-start / column-start / row-end / column-end
    grid-area: 1 / 1 / 2 / 5; */
    grid-area: header;
    border: 1px solid black;
    display: flex;
    align-items: flex-end;
    justify-content: flex-end;
    padding: 10px;
    background-color: #4F9FAB;
    color: #181d29;
    font-size: 38px;
}
#clear {
    /* grid-area: 2 / 1 / 3 / 3; */
    grid-area: clear;
}
#delete {
    /* grid-area: 2 / 3 / 3 / 5; */
    grid-area: delete;
}
#sign {
    grid-area: sign;
}
.buttons {
    font-family: Pangolin;
    font-size: large;
    border-radius: 5px;
}
.buttons:focus {
    outline: none;
}
.keys{
    color: #222;
    font-weight: 500;
    font-size: 25px;
}
.keys:hover{
    background-color: #ccc;
}
.numbers{
    background-color: #111;
    color: white;
}
.numbers:hover {
    background-color: #222;
}
#decimal {
    /* background-color: #111;
    color: white;
    border-radius: 5px; */
    font-weight: bolder;
}
.operators {
    background-color: #f79e00;
    font-size: 25px;
}
.operators:hover {
    background-color: #f9b439;
}
#container {
    font-family: Pangolin;
    font-size: 30px;
    width: fit-content;
    padding: 20px 15px;
    margin: auto;
    display: grid;
    grid-template-columns: repeat(4, 80px);
    grid-template-rows: 80px repeat(5, 60px);
    grid-template-areas: 
        "header header header header"
        "clear clear sign delete";

    row-gap: 10px;
    column-gap: 10px;
    border-radius: 5px;
    box-shadow: 0 0 2px 3px rgba(50, 50, 50, 0.5), 0 0 3px 4px rgba(50, 50, 50, 0.3);
    background-color: #273043;
}
#error {
    margin: 5px;
    font-family: Pangolin;
    text-align: center;
    font-size: 24px;
}
footer {
    font-family: Dancing Script;
    font-weight: bold;
    font-size: 22px;
    background-color: #1ecbe1;
    display: flex;
    flex-flow: row wrap;
    border-top: 2px solid black;
    padding: 0px 30px;
    padding-top: 18px;
    padding-bottom: 18px;
    justify-content: space-between;
}
footer>a{
    text-decoration: none;
    color: #000;
}
footer>a:hover {
    color: rgb(255, 0, 191);
}
.activated {
    background-color: #f9b439;
}