html, body {
    height: 100%;
    width: 100%;
    margin: 0;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    letter-spacing: 2px;
}

header {
    align-self: stretch;
    background-color: white;
    display: flex;
    flex-direction: row;
    justify-content: space-evenly;
    align-items: center;
    padding: 1em;
}

.content {
    display: flex;
    flex-direction: column;
    background-color: red;
    align-self:stretch;
    align-items: center;
    flex-grow: 1;
    justify-content: center;
    gap: 25px;
    padding: 10px;
}

.background-color-display {
    font-size: 2em;
    padding: 10px;
    background-color: black;
    color: white;
    border-radius: 10px;
    font-weight: bold;
}

.title-button {
    border-style: none;
    background-color: transparent;
    font-family: Arial, Helvetica, sans-serif;
    letter-spacing: 2px;
}

.confirm {
    border-color: black;
    border-style: solid;
    background-color: transparent;
    padding: 5px 10px 5px 10px;
    letter-spacing: 2px;
}

.title {
    font-weight: bold;
    color: green;
}

#simple {
    color: green;
}