:root{
    --body-backG-color: #fcf6f6;
    --key-backG-color: rgb(40, 9, 151);
    --key-small-font-color: rgb(8, 143, 102);
    --key-border-color: rgb(24, 8, 82);
}

@import url('https://fonts.googleapis.com/css2?family=Muli&display=swap');

* {
    box-sizing: border-box; /*if we add border or padding, it doesn't affect the width of it. */
}

body {
    /* background-color: var(--body-backG-color); */
    font-family: 'Muli', sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    height: 100vh;
    overflow: hidden; /*don't want scroll bar to appear.*/
    margin: 0;
}

.key {
    border: 1px solid var(--key-border-color);
    color: var(--body-backG-color);
    background-color: var(--key-backG-color);
    box-shadow: 1px 1px 3px rgba(40, 9, 151, 0.2);
    display: inline-flex;
    align-items: center;
    font-size: 20px;
    font-weight: bold;
    flex-direction: column;
    margin: 15px;
    padding: 20px;
    min-width: 150px;
    position: relative;
}

.key small {
    position: absolute;
    top: -24px;
    left: 0px;
    text-align: center;
    width: 100%;
    color: var(--key-small-font-color);
    font-size: 14px;
}