.lienhe{position:fixed;bottom:30%;right:30px;min-width:36px;text-align:center;z-index:99999}.lienhe a{display:block;position:relative;width:36px;height:36px;line-height:36px;border-radius:100%;box-shadow:0px 0px 10px -2px rgba(0,0,0,.7);margin-bottom:10px}.lienhe a.viber{background:#1cb2ed url(https://noithatgolam.vn/wp-content/uploads/2020/03/Messenger-Day-logo200.jpg) center center no-repeat;background-size:contain}.lienhe a.whatapp{background:#1cb2ed url(https://noithatgolam.vn/wp-content/uploads/2020/03/icon-call.png) center center no-repeat;background-size:contain}.lienhe a.zalo{background:#1cb2ed url(https://noithatgolam.vn/wp-content/uploads/2020/03/zalo-1.png) center center no-repeat}.absolute-footer.dark{display:none}.back-to-top.button{bottom:30px;right:95px}