body {
    font-family: "Microsoft Yahei", Helvetica, arial, sans-serif ;
    font-size: 16px;
    line-height: 1.6;
    padding-top: 10px;
    padding-bottom: 10px;
    background-color: white;
    padding: 20px;}

body > *:first-child {
    margin-top: 0 !important; }
body > *:last-child {
    margin-bottom: 0 !important; }
@media screen and (min-width: 914px) {
    body {
        width: 90%;
        /*width: 1280px;*/
        margin:0 auto;
        /*margin: 20px;*/
    }
}
@media screen and (max-width: 913px) {
    body {
        width: 95%;      /* 设置宽度为90%，根据需要调整 */
        margin: 0 auto;  /* 居中对齐 */
    }
}
/*#haigui{*/
/*    width:50%;*/
/*}*/

code {
    margin: 0;
    padding: 0;
    font-size: 20px; }

.rotate {
  animation: rotate 2s linear infinite;
}

@keyframes rotate {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}