.btn-start{background:radial-gradient(circle,#8b0000,#8b0000);border-color:#ffb000;border-radius:8px;border-style:ridge ridge groove groove;border-width:4px;box-shadow:inset 0 0 5px 3px #0101014d;color:#ffc000;font-size:18px;font-weight:400;letter-spacing:2px;padding:10px 0;text-align:center;text-shadow:0 1px 3px #000}.btn-start:hover{background:radial-gradient(circle,#e52b2b,#8b0000)}.btn-start:active,.btn-start:hover{box-shadow:0 0 5px 5px #fff3}.btn-start:active{background:radial-gradient(circle,#ec6a6a,#e52b2b)}