test.css

body {
font-size: 18px;
font-family: Roboto,'Helvetica Neue',Helvetica,Arial,sans-serif;
}
a,img {
-webkit-transition: all ease-in-out 0.5s;
-moz-transition: all ease-in-out 0.5s;
-ms-transition: all ease-in-out 0.5s;
-o-transition: all ease-in-out 0.5s;
transition: all ease-in-out 0.5s;
}
#nav~div a {
  /*color: #5577c0;*/
  color: #337ab7;
  text-decoration: none;
  border-bottom: 1px solid transparent;
}
#nav~div a:hover {
  color: #000;
  border-bottom: 1px solid #000;
}
#favatar {
  border-radius: 50%;
  width: 20px;
  height: 20px;
  position: relative;
  top: 3px;
}
h1, h2 {
  text-align: center;
}
#avatar {
  border-radius: 50%;
  border: 2px solid #fff;
  display: block;
  margin: 0 auto;
  width: 40px;
  height: 40px;
}
#avatar:hover {
  border: 2px solid #000;
}
.foot {
  margin-top: 20px;
  text-align: center;
  font-weight: bold;
}
.jumbotron {
  text-align: center;
}
#nav {
  margin-top: 20px;
}
#nav > div {
  display: inline-block;
}
#nav a {
  display: inline-block;
  /*background: #000;*/
  /*border-radius: 25px;*/
  height: 25px;
}
#nav a {
  margin: 0px 4px;
  text-decoration: none;
  background-color: #3498db;
  color: #fff;
  /*border-radius:10px;*/
  padding: 4px 10px;
}
#nav a:hover {
  color: #f1c40f;
}
#nav {
  text-align: center;
}
#nav a {
  border-top: 4px solid #fff;
  border-bottom: 4px solid #fff;
}
#nav .u, #nav .f {
  color: #fff;
}
#nav .u.a {
  color: #d35400;
}
#nav .f.a {
  color: #8e44ad;
}

#nav a.tu {
  border-top: 4px solid #d35400;
}
#nav a.tf {
  border-bottom: 4px solid #8e44ad;
}
#message {
  color: #fff;
  padding: 10px 20px;
  /*border-radius: 10px;*/
  font-size: 1.5em;
  margin: 20px 0;
}
#message.warn {
  background: #e74c3c;
}
#message.ok {
  background: #2ecc71;
}
.share {
  font-style: italic;
  color: #e74c3c;
  font-size: 1.6em;
  text-align: center;
}
.share .fa {
  /*padding: 0.25em;*/
  /*border-radius: 100%;*/
  color: #fff;
  width: 1.6em;
  text-align: center;
  line-height: 1.6em;
  border-radius: 0.8em;
}
.share .fa-twitter {
  background: #55acee;
}
.share .fa-facebook {
  background: #3b5999;
}
.share .fa-google-plus {
  background: #dd4b39;
}
.share .fa-github {
  background: transparent;
  color: #000;
  font-size: 1.7em;
  position: relative;
  top: 0.15em;
  width: 0;
}