.exercise{position:relative}.exercise h1,.exercise h2,.exercise h3,.exercise h4{color:var(--c-copy)}.exercise a{color:inherit;text-decoration:underline;text-decoration-thickness:2px;-webkit-text-decoration-color:var(--c-exercise);text-decoration-color:var(--c-exercise)}.exercise a:hover{-webkit-text-decoration-color:var(--c-exercise--dark);text-decoration-color:var(--c-exercise--dark)}.exercise a.ex__btn{color:var(--c-copy);text-decoration:none}*,:after,:before{box-sizing:border-box;margin:0}