#goto-top{position:fixed; bottom:4px; right: 20px; opacity:0.5}#goto-top:hover{opacity:1}
@media(min-width:680px){.button_whatsapp{display:none}}
/*
*{
-webkit-user-select: none; 
-moz-user-select: none;
-ms-user-select: none;
-o-user-select: none;
user-select: none;
}
*/