.maque {

    width: 100%;
    font-size: 20px;
    padding: 10px;
    color: #f8f9fa;
    box-shadow: 4px 4px 4px #000;
    border: 2px solid #bbccba, 10px 10px 0px 0px;
    background: linear-gradient(to top left, #d9edf7 0%, #146879 100%);
    text-align: center;
}

#signals span {
	display: block;
	position: absolute;
	left: 50%;
	opacity: 0;
	border-radius: 500px;
	box-shadow: 0 0 80px rgba(116, 187, 220, 0.5);
	-webkit-animation: signal 2s infinite alternate ease-in-out;
	-moz-animation: signal 2s infinite alternate ease-in-out;
	-ms-animation: signal 2s infinite alternate ease-in-out;
	-o-animation: signal 2s infinite alternate ease-in-out;
	animation: signal 2s infinite alternate ease-in-out;
}

#signals span.s1, #signals span.s2, #signals span.s3, #signals span.s4 {
	border: 2px solid #74bbdc;	
	box-shadow: 0 0 100px red;
}

#signals span.s1 {
	width: 100px;
	height: 100px;
	margin-top: -50px;
	margin-left: -50px;
	-webkit-animation-delay: .3s;
	-moz-animation-delay: .3s;
	-ms-animation-delay: .3s;
	-o-animation-delay: .3s;
	animation-delay: .3s;
}

#signals span.s2 {
	width: 300px;
	height: 300px;
	margin-top: -150px;
	margin-left: -150px;
	-webkit-animation-delay: .6s;
	-moz-animation-delay: .6s;
	-ms-animation-delay: .6s;
	-o-animation-delay: .6s;
	animation-delay: .6s;
}

#signals span.s3 {
	width: 500px;
	height: 500px;
	margin-top: -250px;
	margin-left: -250px;
	-webkit-animation-delay: .9s;
	-moz-animation-delay: .9s;
	-ms-animation-delay: .9s;
	-o-animation-delay: .9s;
	animation-delay: .9s;
}

#signals span.s4 {
	width: 700px;
	height: 700px;
	margin-top: -350px;
	margin-left: -350px;
	-webkit-animation-delay: 1.2s;
	-moz-animation-delay: 1.2s;
	-ms-animation-delay: 1.2s;
	-o-animation-delay: 1.2s;
	animation-delay: 1.2s;
}

@-webkit-keyframes signal {
	from {opacity: 0;}
	to {opacity: 1;}
}

@-moz-keyframes signal {
	from {opacity: 0;}
	to {opacity: 1;}
}

@-o-keyframes signal {
	from {opacity: 0;}
	to {opacity: 1;}
}

@keyframes signal {
	from {opacity: 0;}
	to {opacity: 1;}
}