#wrapper {
    font-family: helvetica, arial, sans-serif;
}
body {
    background-color: #202125;
    color: rgb(235, 235, 235);
    width: 700px;
    margin: auto; 
    font-family: helvetica, arial, sans-serif;
  }
nav { 
    float: left; 
    width: 175px; 
    background-color: #333333;
    border-radius: 10px;
    height: auto;
    margin-right: 10px;
    font-weight: bold;
    text-align: center;
    margin-top: 10px;
    }
main { 
    border-radius: 10px;
    background-color: #333333;
    height: auto;
    margin-top: 10px;
    overflow: auto;
    }
p { 
    margin-left: 15px;
}
header { 
    text-align: center;
    background-color: #333333;
    border-radius: 10px;
    height: auto;
    margin-top: 20px;
}
h1 { 
    margin:5px;
}
ul {
    display: block;
    list-style-type: none;
    margin: 0;
    padding: 0;
  }
li a {
    display: block;
    color: #ffffff;
    background-color: #202125;
    border: 2px solid #000000;
    padding: 8px 16px;
    text-decoration: none;
    margin: 4px;
    border-radius: 8px;
  }
li a:hover {
    background-color: #c0c0c0;
    color: #41444a; 
    margin: 4px;
    border-radius: 8px;
}
footer { 
    background-color: #16171a;
    border-radius: 10px;
    height: auto;
    margin-top: 7px;
    text-align: center;
    }
img {
    border-radius: 15px;
    display: block;
    margin-top:10px;
    margin-bottom:10px;
}
h2 {
    text-align: center;
}