html {
    height: 100%;
}

body {
    height: 100%;
    margin: 0;
    overflow: hidden;
}

.container {
    height: 100%;
    margin: 0;
    display: flex;
    justify-content: center;
    flex-direction: column;
    align-items: center;
}

body > * {
    font-family: Avenir, Arial, sans-serif;
    font-weight: 900;
}

button {
    border-radius: 50%;
    width: 200px;
    height: 200px;
    border: none;
    color: white;
    font-family: Avenir, Arial, sans-serif;
    font-weight: 900;
    font-size: 2.5rem;


    background: red;
    text-shadow: 0 3px 1px rgba(122, 17, 8, .8);
    box-shadow: 0 8px 0 rgb(183, 9, 0),
        0 15px 20px rgba(0, 0, 0, .35);


    text-transform: uppercase;
    transition: .1s all ease-in;
    outline: none;
    cursor: pointer;
    text-align: center;
    -webkit-user-select: none;
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
}

button span {
    position: relative;
}

button:active {
    padding-top: 3px;
    transform: translateY(4px);

    background: rgb(15, 201, 15);
    text-shadow: 0 3px 1px rgba(7, 75, 16, 0.8);
    box-shadow: 0 4px 0 rgb(17, 117, 50),
        0 8px 6px rgba(0, 0, 0, .45);
}

.whiteButton {
    color: white;
}

#signup {
    color: #721c24;
    background-color: #f8d7da;
    border-color: #f5c6cb;
    position: relative;
    padding: 0.75rem 1.25rem;
    margin: 1rem 1rem;
    border: 1px solid transparent;
    border-radius: 0.25rem;
    display: none;
}

.pointerparent {
    touch-action: none;
}