body {
    background: #111 !important;
    color: #f0f0f0;
}

a {
    color: #f0f0f0;
    text-decoration: none;
}

.icp {
    font-size: 12px;
    color: #888 !important;
}

.mt-100 {
    margin-top: 100px !important;
}

.mt-200 {
    margin-top: 200px !important;
}

.logo {
    width: 100%;
}

.thumbnail img {
    width: 100%;
    margin-bottom: 10px;
}

#rayCanvas {
    position: fixed;
    top: 0;
    left: 0;
    z-index: -1; /* 作为背景特效 */
  }