#button_bk{position:fixed;right:20px;bottom:20px;top:auto;box-shadow:0 4px 12px rgb(0 0 0 / 15%);height:62px;font-weight:bold;font-size:18px;line-height:28px;color:#212020;z-index:9999999;text-decoration:none;padding:17px 32px 17px 32px;-webkit-transition:linear .4s;transition:linear .4s;text-transform:none;background-color:#fff;opacity:0;visibility:hidden;white-space:nowrap}#button_bk:hover{cursor:pointer;background-color:#ffefe2}#button_bk:active{background-color:#555}#button_bk.show{opacity:1;visibility:visible}.content{width:77%;margin:50px auto;font-family:"Merriweather",serif;font-size:17px;color:#6c767a;line-height:1.9}@media(max-width:768px){#button_bk{position:fixed;right:20px;bottom:20px;top:auto;box-shadow:0 4px 12px rgb(0 0 0 / 15%);height:47px;font-weight:bold;font-size:18px;line-height:28px;color:#212020;z-index:9999999;text-decoration:none;padding:10px 20px 10px 20px;-webkit-transition:linear .4s;transition:linear .4s;text-transform:none;background-color:#fff;opacity:0;visibility:hidden;white-space:nowrap}}@media(min-width:500px){.content{width:43%}#button_bk{margin:30px}}.content h1{margin-bottom:-10px;color:#03a9f4;line-height:1.5}.content h3{font-style:italic;color:#96a2a7}