:root{--backgroundColor:#fff}*,:after,:before{box-sizing:inherit}html{box-sizing:border-box;font-size:14px;-ms-overflow-style:-ms-autohiding-scrollbar}body{background-color:var(--backgroundColor);-ms-text-size-adjust:100%;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility}.must:after{content:"*";color:red;margin-left:3px;top:-1px;position:relative}