* {
    padding: 0;
    font-family: consolas;
    margin: 0;
    box-sizing: border-box;
}

body {
    background: #827191;
}

#canvas {
    background: #804768;
    border-radius: 20px;
    top: 1vh;
    left: 10vw;
    position: relative;
    width: 80vw;
    height: 80vh;
    box-shadow: 2px 2px 20px black;
}

h1 {
    text-align: center;
}

#checkboxen {
    font-size: 120%;
    user-select: none;
    margin-top: 2%;
    margin-left: 5%;
    margin-right: 5%;
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
}
#checkboxen div {
    opacity: 60%;
    color: #804768;
    background: lightblue;
    font-style: bold;
    padding: 10px;
    margin-left: 30px;
    margin-right: 30px;
    border-radius: 15px;
    transition: all 0.1s ease-in-out;
}
#checkboxen div:hover {
    opacity: 100%;
    color: lightblue;
    background: #804768;
    transform: scale(1.3);
}

#gravityBTN {
    opacity: 60%;
    color: #804768;
    background: lightblue;
    padding: 10px;
    font-size: 120%;
    border-radius: 15px;
    border: none;
    box-shadow: 2px 2px 10px black;
    transition: all 0.1s ease-in-out;
}
#gravityBTN:hover{
    opacity: 100%;
    box-shadow: 2px 2px 10px white;
    background: #804768;
    color: lightblue;
    transform: scale(1.3);
}

#gravityBTN:active{
    font-size: 130%;
}