body {
  background-image: url('giphy.gif');
  background-repeat: no-repeat;
  background-attachment: fixed;
  background-size: cover;
  box-sizing: border-box;
  }

h2 + p {
    line-height: 15px;
}

/* top navigation bar */
.topnav {
  overflow: hidden;
  background-color:rgba(0, 35, 102, 0.5);
}

.topnav a {
  float: left;
  display: block;
  color: rgb(255, 255, 255);
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
  font-size: 17px;
}

.topnav a:hover {
  background-color: rgba(0, 0, 0, 0.5);
  color: rgb(255, 255, 255);
}

.topnav a.active {
  background-color: rgba(0, 35, 102, 0.5);
  color: white;
}

ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
}

 * {
    box-sizing: border-box;
  }
  
  /* CSS for main section */
.intro {
  background-color: rgba(0, 35, 102, 0.5);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding-top: 150px;  
  padding-bottom: 150px;
  padding-left: 10px;
  padding-right: 10px;
  width: 100%;
  height: 520px;
}

.intro h1 {
  font-family: sans-serif;
  color: #fff;
  font-weight: bold;
  text-transform: uppercase;
  margin: 0;
}

.intro h2 {
  font-family: Arial;
  color: #fff;
  font-weight: bold;
  text-transform: uppercase;
  margin: 0;
}

.intro h5 {
  color: #ffffff;
  text-transform: uppercase;
  margin: 20px 0;
} 
  
  /* buttons */
  .centered-buttons {
    text-align: center;
  }

  .centered-buttons1 {
    background-color: rgba(0, 35, 102, 0.5);
    color: white;
    border-color: #FFFFFF;
    height: 35px;
    width: 105px;
    border-radius: 2px;
    cursor: pointer;
    margin-right: 8px;
    transition: opacity 0.15s;
}

.centered-buttons1:hover {
    background-color: RGBA (255, 255, 255, 0.5);
    color: #white;
    border-color: #002366;
}

.centered-buttons1:active {
  background-color: black;
  color: white;
  border-color: white;