body {
    font-family: 'Pretendard', sans-serif;
    padding-bottom: 50px;
}
#canvas {
    width: 100%;
    height: auto;
}
.color-button {
    margin: 5px;
    flex: 1 1 calc(20% - 10px);
}
.color-container {
    gap: 10px;
}

/* 로딩창 */
#loading {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    color: white;
    text-align: center;
    padding-top: 20%;
    font-size: 24px;
}