#btn_subir {
    position:fixed;
    right: 30px;
    bottom: 30px;
    cursor: pointer;
    width: 40px;
    height: 40px;
	background: rgba(255, 255, 255, 0.8);
    text-indent: -9999px;
	z-index: 999;
    display: none;
    -webkit-border-radius: 5px;
    -moz-border-radius: 5px;
    border-radius: 50%;
	transition: 0.4s;
	}
#btn_subir span {
    position: absolute;
    top: 50%;
    left: 50%;
    margin-left: -8px;
    margin-top: -12px;
    height: 0;
    width: 0;
    border: 8px solid transparent;
    border-bottom-color: #000;
	}
#btn_subir:hover {
	background: rgba(9, 96, 213, 1.0);
	opacity: 1;
	filter: "alpha(opacity=100)";
	-ms-filter: "alpha(opacity=100)";
	}
@media screen and (max-width: 1040px) {
	#btn_subir {
		right: 20px;
		bottom: 50px;
		width: 40px;
		height: 40px;
		}
	}