style.css

h1 {
    text-align: center;
}

h2 {
    color: rgb(71, 71, 231);
}

.center {
    display: block;
    margin-left: auto;
    margin-right: auto;
    width: 20%;
}

nav {
    display: block;
    font-size: 18px;
}

.fa {
    padding: 20px;
    font-size: 30px;
    width: 50px;
    text-decoration: none;
}

.fa:hover {
    opacity: 0.7;
}

a.button {
    border: 2px solid black;
    color: white;
    padding: 15px 32px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
    margin: 0 auto;
    cursor: pointer;
    background-color: #008CBA;
}

table, th, tr, td {
    border: 2px solid black;
    border-collapse: collapse;
}

th, tr, td {
    padding: 6px;
}

/* Dropdown Button */
.dropbtn {
    background-color: rgb(6, 1, 7);
    color: white;
    padding: 16px;
    font-size: 16px;
    border: none;
    cursor: pointer;
  }
  
/* Dropdown button on hover & focus */
.dropbtn:hover, .dropbtn:focus {
    background-color: rgb(145, 179, 241);
}

/* The container <div> - needed to position the dropdown content */
.dropdown {
    position: relative;
    display: inline-block;
}

/* Dropdown Content (Hidden by Default) */
.dropdown-content {
    display: none;
    position: absolute;
    background-color: #f1f1f1;
    min-width: 160px;
    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
    z-index: 1;
}

/* Links inside the dropdown */
.dropdown-content a {
    color: black;
    padding: 12px 16px;
    text-decoration: none;
    display: block;
}

/* Change color of dropdown links on hover */
.dropdown-content a:hover {background-color: rgb(145, 179, 241)}

/* Show the dropdown menu (use JS to add this class to the .dropdown-content container when the user clicks on the dropdown button) */
.show {display:block;}

img {                                                                           
    max-width: 100%;                                                              
    height: auto;
}

iframe {
      max-width: 100%;
      width: 858px;
      height: 480px;
      text-align: center;
      display: block;
      margin-left: auto;
      margin-right: auto;
}