body{
    margin: 0;
    padding: 0;
    background-color: rgb(51, 51, 51);
}
#content{

    color: white;
    text-align: center;
    font-family: Arial, Helvetica, sans-serif;
}
h1{
    margin: 0;
}
li{
    list-style-type: none;
    height: 100px;
}
ul{
    display: flexbox;
    padding: 0;
    align-content: center;
}
a{

    text-decoration: none;
    color: white;
}
img{
    width: auto;
    height: 200px;
}