html, body {
    margin: 0;
    padding: 0;
}

canvas {
    display: block;
}

/* CSS for Start BTN from https://uiverse.io/Gautammsharma/wicked-cobra-3*/
.start-btn {
    display: inline-block;
    padding: 10px 20px;
    font-size: 24px;
    font-weight: bold;
    text-align: center;
    text-decoration: none;
    /*color: #fff;*/
    color: #00008B;
    /*background-color: #ff5252;*/
    background-color: #FFE4C4;
    border: 2px solid #000;
    border-radius: 10px;
    box-shadow: 5px 5px 0px #000;
    transition: all 0.3s ease;
    cursor: pointer;
}

.start-btn:hover {
    background-color: #00008B;
    color: #FFE4C4;
    border: 2px solid #FFE4C4;
    box-shadow: 5px 5px 0px #FFE4C4;
}

.start-btn:active {
    background-color: #fcf414;
    box-shadow: none;
    transform: translateY(4px);
}