*{margin:0;padding:0;box-sizing:border-box}html{font-size:16px}@media (max-width: 768px){html{font-size:14px}}@media (max-width: 480px){html{font-size:12px}}html,body{height:100%;background-attachment:fixed}body{background-attachment:fixed;color:#1e293b;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{text-decoration:none;color:#1e293b;transition:color .3s ease}a:hover{color:#0f172a}.el-backtop{color:#f5a623}