:root {
	--theme-color: #000;
}
body {
	font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
	font-size: 14px;
	padding: 0;
	margin: 0;
}
.sticky-footer {
	cursor: pointer;
	width: 320px;
	left: calc(100% / 2 - 160px);
	position: fixed;
    bottom: 0;
    z-index: 999;
}
.sticky-top {
	bottom: auto;
	top: 0;
}
.sticky-x-button {
	position: absolute;
    left: 0;
    top: -10px;
    font-size: 16px;
    color: #fff;
    cursor: pointer;
    background: var(--theme-color);
    border-radius: 50%;
	width: 30px;
	height: 30px;
    line-height: 30px;
    text-align: center;
}
.sticky-top .sticky-x-button {
	top: auto;
	bottom: -10px;
}
.sticky-pc-footer-content {
	width: 728px;
	left: calc(100% / 2 - 364px);
}
.left-balloon {
	position: fixed;
	bottom: 0;
	left: 0;
	z-index: 999
}
.x-left-balloon {
	position: fixed;
	left: 0;
	bottom: 227px;
	display: block;
	background: var(--theme-color);
	color: #fff; cursor:
	pointer; padding: 5px 10px
}
.right-balloon {
	position: fixed;
	bottom: 0;
	right: 0;
	z-index: 999
}
.x-right-balloon {
	position: fixed;
	right: 0;
	bottom: 227px;
	display: block;
	background: var(--theme-color);
	color: #fff;
	cursor: pointer;
	padding: 5px 10px
}
.float-left {
	position: fixed;
	top: 0;
	left: 0;
	z-index: 999
}
.x-float-left {
	position: fixed;
	left: 0;
	top: 0;
	display: block;
	background: var(--theme-color);
	color: #fff;
	cursor: pointer;
	padding: 5px 10px
}
.float-right {
	position: fixed;
	top: 0;
	right: 0;
	z-index: 999
}
.x-float-right {
	position: fixed;
	right: 0;
	top: 0;
	display: block;
	background: var(--theme-color);
	color: #fff;
	cursor: pointer;
	padding: 5px 10px
}

/*  Nếu sử dụng Bootstrap 3, không cần sử dụng đoạn này */

.visible-xs,
.visible-sm,
.visible-md,
.visible-lg {
	display: none !important;
}
@media (max-width: 767px) {
	.visible-xs {
		display: block !important;
	}
}
@media (min-width: 768px) and (max-width: 991px) {
	.visible-sm {
		display: block !important;
	}
}
@media (min-width: 992px) and (max-width: 1199px) {
	.visible-md {
		display: block !important;
	}
}
@media (min-width: 1200px) {
	.visible-lg {
		display: block !important;
	}
}