packages/mip/src/register-element.js
function loadCss (css, name) {
  if (css) {
    cssLoader.insertStyleElement(document, document.head, css, name, false)
  }
}
function loadCss (css, name) {
  if (css) {
    cssLoader.insertStyleElement(document, document.head, css, name, false)
  }
}
function loadCss ( css , name ) { if ( css ) { cssLoader . insertStyleElement ( document , document . head , css , name , false ) } }
Add a style tag to head by csstext

@param {string} css Css code
@param {string} name name
Add a style tag to head by csstext