*,
*::before,
*::after {
    box-sizing: border-box;
    position: relative;
    animation-timing-function: linear;
    margin: 0;
    padding: 0;
    line-height: 1;
    vertical-align: center;
}

:root {
    --font-family: 'Josefin Sans', sans-serif;
    --bg-color: #03071e;
    --text-color: #ffba08;
    --number-buttons: #e85d04;
    --text-output-color: #0026ffce;
    --container-bg-color: #ffba08;
    --delete-buttons: #d00000;
    --operator-colors: #dc2f02;


    /* --bg-color: #03071e;
    --text-color: #ffba08;
    --number-buttons: #03071eb0;
    --text-output-color: #03071eb0;
    --container-bg-color: #ffba08;
    --delete-buttons: #d00000;
    --operator-colors: #dc2f02; */
}

span {
    margin: 0;
}

body {
    font-family: var(--font-family);
    min-width: none;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background-color: var(--bg-color)
}

h1 {
    color: var(--text-color);
    font-size: 1.5em;
    margin-bottom: 10px;
}

.container {
    width: 300px;
    height: 480px;
    background-color: var(--container-bg-color);
    border: none;
    border-radius: 15px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.output {
    width: 265px;
    height: 65px;
    margin-top: 20px;
    margin-bottom: 20px;
    font-size: 2.5em;
    padding-top: 6px;
    padding-right: 4px;
    text-align: right;
    font-family: var(--font-family);
    color: var(--text-output-color);
    border-radius: 15px;
    background-color: rgb(221, 221, 221);
    box-shadow: inset 2px 2px 5px gray;
    border: 1px solid var(--container-bg-color);
    outline: none;
}



.main {
    width: 265px;
    height: 340px;
    display: flex;
    flex-wrap: wrap;

}

.button {
    width: 60px;
    height: 60px;
    margin: 2px auto;
    padding-top: 5px;
    font-family: var(--font-family);
    font-size: 1.5em;
    font-weight: 700;
    color: var(--container-bg-color);
    background-color: var(--operator-colors);
    border-radius: 8px;
    border: none;
    box-shadow: 0 0 2px var(--operator-colors);
    cursor: pointer;
    position: relative;
}

.button:nth-child(-n + 3) {
    background-color: var(--number-buttons);
}


.button:nth-child(4) {
    background-color: var(--delete-buttons);
}

.button:nth-child(n+5):nth-child(-n+7) {
    background-color: var(--number-buttons);
}

.button:nth-child(n+9):nth-child(-n+11) {
    background-color: var(--number-buttons);
}

.button:nth-child(n+9):nth-child(-n+11) {
    background-color: var(--number-buttons);
}

.button:nth-child(14) {
    background-color: var(--number-buttons);
}


.button:nth-child(17) {
    background-color: var(--operator-colors);
    position: relative;
    left: -10px;

}

.button:nth-child(18) {
    background-color: var(--delete-buttons);
    position: relative;
    left: -33px;

}

.button:nth-child(19) {
    background-color: var(--operator-colors);
    position: relative;
    left: 11px;

}



.footer {
    color: var(--text-color);
    font-size: 1em;
    margin-top: 10px;
    position: relative;
    bottom: 0;
}