*{
    margin: 0px;
    padding: 0px;
    font-family: 'Roboto','Arial','sans-serif';
}
body{
    background-color: rgb(255, 255, 255);
}
#nav{
    background-color:  #121f50;
    height: 700px;
    border-color: black;
    margin-top: 100px;
    margin-left: 200px;
    margin-right: 200px;
    margin-bottom: 200px;
}
#heading{
    color: rgb(255, 255, 255);
    font-weight: bolder;
    text-align: center;
    padding: 20px;
}
#text{
    color: rgb(255, 255, 255);
    margin-left: 100px;
    margin-top: 20px;
    margin-right: 50px;
}
#placeholder{
    margin-left: 100px;
    margin-right: 50px;
    margin-top: 10px;
}
button{
    margin-left: 500px;

}