.centre {
    text-align: center;
    display: block;
    margin-left: auto;
    margin-right: auto;
    height: auto;
    margin-top: 10vh;
}

.centreNoPadding {
    text-align: center;
    display: block;
    margin-left: auto;
    margin-right: auto;
    height: auto;
    margin-top: 1vh;
}

button {
    padding: 1vh 3vh;
    background-color: lime;
    border-radius: 2vh;
    cursor: pointer;
    border: none;
    box-shadow: 0.5vh 0.5vh 0.5vh darkgreen;
    position: relative;
    top: 0;
    left: 0;

    transition: all 0.1s ease-in-out;
}

button:hover {
    background-color: green;
    transform: scale(1.15);
}

button:active {
    box-shadow: 0.2vh 0.2vh 0.5vh darkgreen;
    top: 0.3vh;
    left: 0.3vh;
}

body {
    background-color: lightblue;
    font-family: Arial, sans-serif;
    user-select: none;
}

h1 {
    color: white;
    font-size: 48px;
    margin-top: 20vh;
    margin-bottom: 15vh;
}

.green {
    color: green;
}