.exercise{border-top:solid red;padding-top:10px;color:red}.exercise::before{content:">>> "}.task_example .ex_head{font-weight:bold;color:white;text-align:center;background-color:#006B68;padding:0px}.task_example .ex_body{padding:5px;border:solid 1.5px black;border-top:none;border-bottom:none}.task_example .ex_body:last-of-type{border-bottom:solid}.task_example .left,.task_example .right{padding:20px 0 20px 0}