* {
    font-family: Verdana, Geneva, Tahoma, sans-serif;
}

p {
    font-size: 18px;
}

body {
    background-color: gray;
}

main {
    background-color: white;
    max-width: 700px;
    margin: 25px auto;
    padding: 25px;
    border-radius: 25px;
}

h2 {
    margin-top: 40px;
}

h3 {
    margin-top: 30px;
    margin-bottom: 15px;
}

p {
    font-size: 18px;
}

/* button colors */

button {
    width: 130px;
    height: 40px;
    font-size: 18px;
    color: white;
    border: 2px solid black;
    border-radius: 10px;
}

button:hover {
    filter: brightness(1.5);
}

button:active {
    filter: brightness(.8);
}

.black {
    background: rgb(43, 39, 37);
}

.chocolate {
    background-color: rgb(101, 51, 14);
}

.cinnamon {
    background-color: rgb(161, 92, 36);
}

.result {
    display: none;
}

.dilute {
    background-color: rgb(100, 100, 100);
}