html, body{margin: 0;padding:0;height: 100%;}

body{background-color: #E6E7E8;}

.container{height: 100vh;}

.retorno{margin-top: 50px;}

.card{top: 50%;margin-top: -221.5px}

#a-icone{color: yellow;}

#i-icone{float: left;}

.btn-block{width: 170px;}

span a{text-decoration: none!important;}

@media screen and (max-width: 1000px){.card{width: 75%!important;} }