/* Reset: browser defaults only, not lesson demo styling */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0}
img,svg,video,canvas{max-width:100%}
img,video{height:auto}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
a{color:inherit}
:focus-visible{outline:3px solid var(--focus,#3455d1);outline-offset:3px}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}