body,
html {
    width: 100%;
    height: 100%;
    
}

body,
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: "Lato","Helvetica Neue",Helvetica,Arial,sans-serif;
    font-weight: 700;
}

.topnav {
    font-size: 16px;
    border-bottom: 1px outset rgba(192, 192, 192, 0.5);
    background: rgba(192, 192, 192, 0.9);
    box-shadow: 0px 1px rgba(0, 0, 0, 0.3);
}
.topnav ul.navbar-nav li a {
background: rgba(28, 28, 28, 0.1);
color: #000;
}
.topnav ul.navbar-nav li a:hover,
.topnav ul.navbar-nav li a:focus
 {
background: rgba(255, 255, 255, 0.5);
color: #000;
}

.topnav .navbar-brand {
  background: rgba(28, 28, 28, 0.0);
  color: #000;
}

.topnav .navbar-brand:hover,
.topnav .navbar-brand:focus {
  background: rgba(255, 255, 255, 0.5);
  color: #000;
}
c
.lead {
    font-size: 18px;
    font-weight: 400;
}
/*top background*/
.intro-header { 
    padding-top: 50px; /* If you're making other pages, make sure there is 50px of padding to make sure the navbar doesn't overlap content! */
    padding-bottom: 50px;
    text-align: center;
    background: url('https://images.unsplash.com/photo-1555131930-51db81ce66b9?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=1500&q=80') no-repeat center center fixed;
    background-size: cover;
    height: 855px;
}
.bg-overlay {
  background:rgba(0,0,0, 0.3);
  height: 855px;
}

.intro-message {
    position: relative;
    padding-top: 20%;
    padding-bottom: 20%;
}
/*Big header*/
.intro-message > h1 {
    margin-top: -50px;
    text-shadow: 2px 1px 2px #000;
    font-size: 5em;
    color: rgba(255, 255, 255, 0.7);
}

.intro-divider {
    width: 400px;
    border-top: 1px solid #f8f8f8;
    border-bottom: 1px solid rgba(0,0,0,0.2);
}
/*small header*/
.intro-message > h3 {
    text-shadow: 1px 1px 1px rgba(0,0,0,0.6);
  color: black;
}

@media(max-width:767px) {
    .intro-message {
        padding-bottom: 15%;
    }

    .intro-message > h1 {
        font-size: 3em;
    }

    ul.intro-social-buttons > li {
        display: block;
        margin-bottom: 20px;
        padding: 0;
    }

    ul.intro-social-buttons > li:last-child {
        margin-bottom: 0;
    }

    .intro-divider {
        width: 100%;
    }
}
/*line*/
hr.intro-divider {
  border: 1px outset rgba(255, 255, 255, 0.2);
  box-shadow: 1px 1px 1px rgba(0,0,0,0.6);
  width: 100%;
}
/* social buttons */
.btn {
  display: inline-block;
  color: #000;
  border: 2px outset rgba(0, 0, 0, 0.9);
  background: #C0C0C0;
  text-shadow: 1px 1px 1px rgba(0,0,0, 20);
  box-shadow: 3px 3px 3px rgba(0,0,0,0.5);
  letter-spacing: 2px;
  transition: 0.2s;
}

.btn:hover {
	color: #fff;
  border: 2px outset rgba(0, 0, 0, 0.9);
  background: rgba(0,0,0, 0.9);
  transform:scale(1.1);
  transition: 0.2s;
  text-shadow: 1px 1px 1px rgba(0,0,0, 20);
  box-shadow: 3px 3px 3px rgba(0,0,0,0.5);
  letter-spacing: 2px;
}