html, body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    font-family: Arial, sans-serif;
}

#particles-js {
  display: block;
  position: absolute;
  top: 0px;
  left: 0;
  width: 100%;
  height: 120vh;
  z-index: 1;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  pointer-events: none; 

}

.container {
    position: relative;
    width: 100%;
    height: 100%;
}

.background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('../image/bg2.jpg'); /* 在此替换为你的背景图链接 */
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.top2 {
    position: relative;
    width: 100%;
    height: 100%;
}

.top_video {
    width: 71px; 
    height: 71px; 
    position: fixed; /* 相对于窗口定位 */
    top: 13%; /* 使用百分比单位定位 */
    left: 75%; /* 使用百分比单位定位 */
    padding: 10px; 
    cursor: pointer;
    z-index: 1000; /* 确保在顶部显示 */
}

.top_video img {
    width: 100%;
    height: auto;
    -moz-animation: spin 5s infinite linear;
    -o-animation: spin 5s infinite linear;
    -webkit-animation: spin 5s infinite linear;
    animation: spin 5s infinite linear;
}

@-moz-keyframes spin {
    0% { -moz-transform: rotate(0deg); }
    100% { -moz-transform: rotate(360deg); }
}

@-webkit-keyframes spin {
    0% { -webkit-transform: rotate(0deg); }
    100% { -webkit-transform: rotate(360deg); }
}

@-o-keyframes spin {
    0% { -o-transform: rotate(0deg); }
    100% { -o-transform: rotate(360deg); }
}

@-ms-keyframes spin {
    0% { -ms-transform: rotate(0deg); }
    100% { -ms-transform: rotate(360deg); }
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@-webkit-keyframes float {
    0% { -webkit-transform: translateY(0); transform: translateY(0); }
    50% { -webkit-transform: translateY(10px); transform: translateY(10px); }
    100% { -webkit-transform: translateY(0); transform: translateY(0); }
}

@keyframes float {
    0% { -webkit-transform: translateY(0); transform: translateY(0); }
    50% { -webkit-transform: translateY(10px); transform: translateY(10px); }
    100% { -webkit-transform: translateY(0); transform: translateY(0); }
}