.md-typeset h1, .md-typeset h2, .md-typeset h3, .md-typeset h4 {
    font-weight: bold;
    word-wrap: break-word;
}
.md-grid {
  max-width: 70rem;
}

.star-center {
    position: absolute;
    top: 86%;
    left: 50%;
    transform: translate(-50%, -50%); /* 使用 transform 来偏移 50% */
    font-weight: bold;
    font-size: .5rem
}