.btn-telegram {
  bottom: 150px;
  display: inline-block;
  right: 50px;
  position: fixed;
  z-index: 999;
}

.btn-telegram a {
  background-position: center center;
  background-repeat: no-repeat;
  background-size: 100% auto;
  background-image: url(data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIj8+CjxzdmcgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIiB4bWxuczp4bGluaz0iaHR0cDovL3d3dy53My5vcmcvMTk5OS94bGluayIgdmlld0JveD0iMCAwIDI0MCAyNDAiPgo8ZGVmcz4KCTxsaW5lYXJHcmFkaWVudCBpZD0iYiIgeDE9IjAuNjY2NyIgeTE9IjAuMTY2NyIgeDI9IjAuNDE2NyIgeTI9IjAuNzUiPgoJCTxzdG9wIHN0b3AtY29sb3I9IiMzN2FlZTIiIG9mZnNldD0iMCIvPgoJCTxzdG9wIHN0b3AtY29sb3I9IiMxZTk2YzgiIG9mZnNldD0iMSIvPgoJPC9saW5lYXJHcmFkaWVudD4KCTxsaW5lYXJHcmFkaWVudCBpZD0idyIgeDE9IjAuNjU5NyIgeTE9IjAuNDM2OSIgeDI9IjAuODUxMiIgeTI9IjAuODAyNCI+CgkJPHN0b3Agc3RvcC1jb2xvcj0iI2VmZjdmYyIgb2Zmc2V0PSIwIi8+CgkJPHN0b3Agc3RvcC1jb2xvcj0iI2ZmZiIgb2Zmc2V0PSIxIi8+Cgk8L2xpbmVhckdyYWRpZW50Pgo8L2RlZnM+CjxjaXJjbGUgY3g9IjEyMCIgY3k9IjEyMCIgcj0iMTIwIiBmaWxsPSJ1cmwoI2IpIi8+CjxwYXRoIGZpbGw9IiNjOGRhZWEiIGQ9Im05OCAxNzVjLTMuODg3NiAwLTMuMjI3LTEuNDY3OS00LjU2NzgtNS4xNjk1TDgyIDEzMi4yMDU5IDE3MCA4MCIvPgo8cGF0aCBmaWxsPSIjYTljOWRkIiBkPSJtOTggMTc1YzMgMCA0LjMyNTUtMS4zNzIgNi0zbDE2LTE1LjU1OC0xOS45NTgtMTIuMDM1Ii8+CjxwYXRoIGZpbGw9InVybCgjdykiIGQ9Im0xMDAuMDQgMTQ0LjQxIDQ4LjM2IDM1LjcyOWM1LjUxODUgMy4wNDQ5IDkuNTAxNCAxLjQ2ODQgMTAuODc2LTUuMTIzNWwxOS42ODUtOTIuNzYzYzIuMDE1NC04LjA4MDItMy4wODAxLTExLjc0NS04LjM1OTQtOS4zNDgybC0xMTUuNTkgNDQuNTcxYy03Ljg5MDEgMy4xNjQ3LTcuODQ0MSA3LjU2NjYtMS40MzgyIDkuNTI4bDI5LjY2MyA5LjI1ODMgNjguNjczLTQzLjMyNWMzLjI0MTktMS45NjU5IDYuMjE3My0wLjkwODk5IDMuNzc1MiAxLjI1ODQiLz4KPC9zdmc+);
  display: inline-block;
  width: 46px;
  height: 46px;
  box-sizing: border-box;
  transition: background-size 0.1s linear;
  cursor: pointer;
  text-indent: -9000px;
}