.side-header{font-size:1.5rem;margin-bottom:2.2rem;font-family:Arial,sans-serif;font-weight:700;color:#181819}.instances{margin-bottom:3rem}.arithmos{background:#e8e9ec;padding:5px 14px;color:#4b5c69;text-decoration:none;border-radius:20px;font-family:Arial,sans-serif;font-weight:500;display:inline-block}.arithmos:hover{text-decoration:none;color:#181819;background:#ffdf61}a{transition:all .15s ease-out}.desc{font-size:11px;margin-bottom:23px;margin-top:7px;color:#4b5c69}@media (max-width:768px){.sidebar{display:none}}.main-wrapper{display:grid;grid-template-columns:3fr 1fr;flex:1 0 auto;margin:60px 10% 120px}@media screen and (max-width:768px){#footer,#main-wrapper,#news{width:100%;padding-left:20px;padding-right:20px;box-sizing:border-box}}.content{float:left;margin-right:34px;color:#4b5c69}.sidebar{width:336px;float:right;color:#656565}@media (max-width:768px){.main-wrapper{display:grid;grid-template-columns:1fr;margin-left:0;margin-right:0}.content{width:95%;margin-right:0;margin-bottom:20px}.sidebar{display:none}}