.nav {
  margin: 27px auto 0;
  
  position: relative;
  width: 590px;
  height: 50px;
  background-color: #34495e;
  border-radius: 8px;
  font-size: 0;
    z-index:151;
}
.nav a {
  line-height: 50px;
  height: 100%;
  font-size: 15px;
  display: inline-block;
  position: relative;
  z-index: 1;
  text-decoration: none;
  text-transform: uppercase;
  text-align: center;
  color: white;
  cursor: pointer;
}
.nav animation {
  position: absolute;
  height: 100%;
  top: 0;
  z-index: 0;
  transition: all .5s ease 0s;
  border-radius: 8px;
}
a:nth-child(1) {
  width: 100px;
}
a:nth-child(2) {
  width: 110px;
}
a:nth-child(3) {
  width: 100px;
}
a:nth-child(4) {
  width: 160px;
}
a:nth-child(5) {
  width: 120px;
}
nav .start-home, a:nth-child(1):hover~.animation {
  width: 100px;
  left: 0;
  background-color: #1abc9c;
}
nav .start-about, a:nth-child(2):hover~.animation {
  width: 110px;
  left: 100px;
  background-color: #e74c3c;
}
nav .start-blog, a:nth-child(3):hover~.animation {
  width: 100px;
  left: 210px;
  background-color: #3498db;
}
nav .start-portefolio, a:nth-child(4):hover~.animation {
  width: 160px;
  left: 310px;
  background-color: #9b59b6;
}
nav .start-contact, a:nth-child(5):hover~.animation {
  width: 120px;
  left: 470px;
  background-color: #e67e22;
}

body {
  /*font-size: 12px;
  font-family: sans-serif;
  background: #2c3e50;*/
}
h1 {
  /*text-align: center;
  margin: 40px 0 40px;
  text-align: center;
  font-size: 30px;
  color: #ecf0f1;
  text-shadow: 2px 2px 4px #000000;
  font-family: 'Cherry Swash', cursive;*/
}

p {
    /*position: absolute;
    bottom: 20px;
    width: 100%;
    text-align: center;
    color: #ecf0f1;
    font-family: 'Cherry Swash',cursive;
    font-size: 16px;*/
}

span {
    color: #2BD6B4;
}