html, body {
  margin:0px;
  font-family: 'Roboto', sans-serif;
}

button {
  width: 200px;
  background-color: white; /* Green */
    border: 4px solid black;

  color: black;
  margin-top: 10px;
  padding-top: 10px;
  padding-bottom: 10px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
  font-family: 'Roboto', sans-serif;
}


button:active {     
    background-color:grey;    
}


.everything{
  height:90vh;
}

.container{
  margin: 0;
  position: absolute;
  top: 45%;
  left: 50%;
  -ms-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
}

/* unvisited link */
a:link {
  color: black;
}

/* visited link */
a:visited {
  color: black;
}

/* mouse over link */
a:hover {
  color: grey;
}

/* selected link */
a:active {
  color: whitesmoke;
}