.bflat{background-color:#d6f0fd}.bgrad{background:linear-gradient(to top,#e6f8f6 0,#d6f0fd 100%);height:100%;background-size:cover}.arrow-left{border-top:80px solid transparent;border-bottom:80px solid transparent;border-right:130px solid #add8e6;background-color:transparent}.arrow-left:hover{border-right:130px solid #00f}.arrow-right{border-top:80px solid transparent;border-bottom:80px solid transparent;border-left:130px solid #90ee90;background-color:transparent}.arrow-right:hover{border-left:130px solid green}.arrow-right:disabled{border-left:130px solid #90ee90}.round-button{width:150px;height:150px;border-radius:50%;border:3px solid #f5f5f5;overflow:hidden;background:green;color:#fff;box-shadow:0 0 3px gray;font-size:1.7em;margin-left:10%}.round-button:hover{background:#006400}