* {
  border-sizing: border-box;
  margin: 0;
  padding: 0;
}
body {
    background-color:#121420 ;
    color:#99F7AB ;
    
    padding: 2EM;
}   

h1, h2, p {
    margin-top :.5em;
margin-bottom:.5em;
}

h1 {
     font-family: "Oswald", sans-serif;    
    
}




img {
    border: .7em inset #99F7AB  ;
   
}
/*hover effect*/
.logo{
    border:1px solid #99F7AB;
    border-radius: 50%;
    transition: 1s;
    
}
.logo:hover{
    border:1px solid #99F7AB;
    border-radius: 1px;
}

a{
    color:#99F7AB;
    text-decoration: none;
    padding: .3em;
    transition: .4s;
}



a:hover{
    text-decoration: underline;
    background-color:#99F7AB ;
    color:#273B09 ;
    border-radius:  7px;
    
}

/*start menu bar*/

nav {
  margin: 0;
  margin-left: -2em;
  position: fixed;
  top: 0;
  width: 100%;
  background-color: #2E3138;
}

nav a {
  float: left;
  display: block;
  color: #FFFFFF;
  text-align: center;
  padding: 1em;
  text-decoration: none;
  font-size: 1em;
}

nav a:hover {
  background-color:#2E3138;
  color: #99F7AB;
  font-size: 1em;
}
nav img {
    float: left;
}
main {
/*   ADD PADDING INSIDE THE WHOLE 'main' ELEMENT  */
  padding: 1em;
  
/*   SHIFT THE 'main' ELEMENT DOWN, AWAY FROM THE MENU BAR */
  padding-top: 4em;
  
/*   CUSTOMIZE THESE UNTIL YOU LIKE THE WAY THEY LOOK  */
  width: 100%;
  margin:auto;
}