/* @import url('http://example.com/example_style.css'); */

/***********************************************/
/* CSS @imports must be at the top of the file */
/* Add them above this section                 */
/***********************************************/

/*****************************************/
/* Start your style declarations here    */
/*****************************************/

<style type="text/css">
@media (max-width: 479px) {
  *, ::after, ::before {
    box-sizing: content-box !important;
  }
}

@media (max-width: 767px) {
  .mainBanner {
      height: 100% !important;
  }
}

@media (max-width: 767px) {
  .leftBanner-content h1{
    max-width: 1000px !important;
  }
}

@media (max-width: 960px){
  .leftBanner-content {
    padding-top: 0 !important;
  }
}
</style>