Tiện ích liên hệ Zalo Messenger hiện thị cố định ở góc phải màn hình.
<a class='btn-contact' href='http://m.me/hoablogger/' id='btn-message' target='_blank'><img alt='message' src='https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgOQHPaEY7UojI6fSSK5rLUZcOlmbjD707Dcp9ydoELc_BojtQ6gFxK84JNvHm9Rm5nFnCqTGwM5AKOOLBatOoQx2QtQB_E9fD0unFL38Ywg4N8YJ6mRFizA_YkxWw_6BwwtPwi4wfOAT8/s0/messenger.png' /></a><a class='btn-contact' href='sms:+0971539681' id='btn-sms' target='_blank'><img alt='sms' src='https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhqK9NIH3t7kks0fxEWdOmZLlpndp4TqcXDK_uRCC1TY6ZjO0KlPGVK1EkTQOZcH00dLVRpmLlDqLGyyFnqqrBIRLbV_SqiuVD39OjHkQDSd925rqL2bowqLcMDNWyoj_Ncn44EArcAy9U/s0/sms.png' /></a><a class='btn-contact' href='tel:+0971539681' id='btn-call-phone' target='_blank'><img alt='phone' src='https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjB2ZoQzDINK3aNOYE-e0Hl8iwL9Lk1dhec5OIxeNeIDQ9BmsrLJMHC4-chlf5UzlNT4Du7rqwG-XBaEKqDDaJELsud1RBRgvViS71krFHY2NwRQVzvi0_MsVmGZtWV9Tv2GT9SbTjJ3Ko/s0/phone.png' /></a><a class='btn-contact' href='https://zalo.me/0971539681' id='btn-zalo' target='_blank'><img alt='zalo' src='https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjbz6PtS-MMbQlLd09_Cot0lY3jGz9sO5U52uI0Ae1_bTsPI6OnHepNwTt2kdnhDKAchMiE6R7FH4roBxZxVXTLiS0LWc09-FKtvZgJgzv7m_I2yAQwQSnNzNxy03oxyo_QNzyfowgF07g/s0/zalo.png' /></a><style>@keyframes ani-zalo{0%{opacity:1;width:100%;height:100%;top:0;left:0}100%{opacity:0;width:calc(100% + 30px);height:calc(100% + 30px);top:-15px;left:-15px}}#btn-zalo:before{content:"";position:absolute;z-index:-1;height:calc(100% + 30px);width:calc(100% + 30px);top:-15px;left:-15px;display:block;background:#0065be;border-radius:50%;opacity:0.8;animation-name:ani-zalo;animation-duration:1s;animation-iteration-count:infinite;animation-direction:alternate}.btn-contact{position:fixed;border-radius:50%;height:50px;width:50px;display:block;box-shadow:5px 7px 15px 0 rgba(0,0,0,0.3);right:50px}#btn-zalo{bottom:120px;right:50px}#btn-call-phone{bottom:180px}#btn-sms{bottom:240px}#btn-message{bottom:300px}.btn-contact img{width:calc(100% + 3px);height:calc(100% + 3px);margin:-2px;border-radius:50%}</style>