*{
    margin: 0;
    padding: 0;
}
nav{

   height: 60px;
    background-color: black;
    color: white;
    padding: 20px;
}
li,h1,ul{
    
    display: inline;
}
ul{
    margin-left: 450px;
}
li{
    color: gray;
    cursor: pointer;
}
li:hover{
    color: white;
}
.a{
    margin-top: 30px;
    margin-bottom: 20px;
}

.b{
    margin-top: 50px;
    padding-left:60px;
    width: 500px;
    height: 50px;
    display: inline-block;
}
.c{
   
      padding-left: 400px;
      width: 500px;
      height: 70px;
      display: inline-block;
}
.n{
    margin-top:10px ;
    padding-left:550px;
    display: block;
}
.v{
    margin-top:20px ;
    padding-left: 200px;
    display: block;
}
.t{
    margin-top: 40px;
}
#a{
    margin-top: 100px;
}
#p{
     margin-top: 150px;
}