#simContainer {
    width: 80%;
    height: 90%;
    margin: 0 auto;
    border: 1px solid #000;
    padding: 10px;
    box-sizing: border-box;
    display: flex;
    justify-content: center;
    align-items: center;
}

#controlContainer {
    width: 80%;
    height: 10%;
    margin: 0 auto;
    border: 1px solid #000;
    padding: 10px;
    box-sizing: border-box;
    display: flex;
    justify-content: center;
    align-items: center;
}

.controlButton {
    width: 100%;
    height: 100%;
    cursor: pointer;
}
html, body {
    width: 100vw;
    height: 100vh;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}