styles.css

html {
    max-height: height: 100vh;
    background-color: whitesmoke;
}

#logo {
    padding-left: 10px;
    color: white;
}

#logo:hover {
    color: darkgrey;
}

.login, .go, .about {
    padding-right: 50px;
}

body {
    background-color: whitesmoke;
    font-weight: bold;
    font-family: Montserrat,"Helvetica Neue",Helvetica,Arial,sans-serif;
    overflow-y: hidden;
}

.jumbotron {
    margin-top: -20px;
    height: 96vh;
    background-image: url(img/mountain-1462655.jpg);
    background-position: center;
    background-size: cover;
    background-repeat: no-repeat;
}

.jumbotron p {
    text-align: center;
}

.contactsection1 {
    margin-top: 30px;
    margin-left: 30px;
}

.copyright {
    position: absolute;
    color: whitesmoke;
    bottom: 0;
    margin-left: 15px;
    margin-bottom: 5px;
    
}

body {
    background-color: #2c2c2c;
}

/*Screen size responsiveness*/

@media (min-width: 1200px) {
    .jumbotron {
        height: 96vh;
    }
}

@media (max-width: 768px) {
    #logo {
        padding-left: 20px;
    }
    
 .navbar-toggle {
        max-width: 35px;
        display: inline-block;
        float: right;
    }
}

@media (max-width:400px) {
    .jumbotron {
        height: 96vh;
    }
     #logo {
        padding-left: 10px;
    }
}