* {
    margin: 0;
    padding: 0;
}

h1 {
    font-size: 80px;
    color: #fff6f6;
    font-family: 'Noto Serif', serif;
    text-shadow: 2px 2px 2px red, 2px -2px 2px blue, -2px -2px 2px green,-2px 2px 2px yellow;
}

body {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex: 1;
    gap: 20px;
    padding: 20px;
    background-color: rgba(0, 0, 0, 0.828);
}

.calculator {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background-color: #4586cc;
    padding: 20px;
    gap: 20px;
    border: solid black 1px;
    border-radius: 10px;
    box-shadow: rgba(208, 208, 208, 0.25) 0px 54px 55px, rgba(0, 0, 0, 0.12) 0px -12px 30px, rgba(0, 0, 0, 0.12) 0px 4px 6px, rgba(0, 0, 0, 0.17) 0px 12px 13px, rgba(0, 0, 0, 0.09) 0px -3px 5px;
}

.button-board {
    display: flex;
    flex: 1;
    gap: 10px;
}

.first-column,
.second-column,
.third-column,
.fourth-column,
.fifth-column {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

button {
    font-size: 50px;
    padding: 10px;
    width: 74px;
    height: 82px;
    text-align: center;
    border-radius: 8px;
    border: solid black 1px;
}

button:hover{
    color: #ff7a59;
    border: #ff7a59 solid 1px;
    background:#fff;
}

.numbers {
    background-color: aliceblue;
}

.non-num {
    background-color: #f4d18a;
}

.clear-buttons {
    font-size: 30px;
    background-color: #ff7a59e5;
}

.add {
    flex-grow: 1;
}

.display {
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: 124px;
    font-family: 'Rajdhani', sans-serif;
    /* font-weight: bolder; */
    padding: 10px 20px;
    /* font-size: 40px; */
    text-align: end;
    width: 100%;
    box-sizing: border-box;
    border-radius: 8px;

    /* From https://css.glass */
    background: rgba(255, 255, 255, 0.2);
    border-radius: 16px;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    border: 1px solid rgba(18, 17, 17, 0.3);
}

.top-half {
    font-size: 25px;
    min-height: 25px;
}
.bottom-half {
    font-size: 40px;
    font-weight: bolder;
    min-height: 45px;
}

.DEL {
    font-size: 27px;
}

.negative-sign {
    font-size: 37px;
}