CodePen Embed - CSS Only - 3D Menu + Page Transition

<!DOCTYPE html>
<html>
  <head>

    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
    <meta name="viewport" content="width=device-width,initial-scale=1">
    
    <meta name="author" content="name">
    <meta name="description" content="description here">
    <meta name="keywords" content="keywords,here">

    <link rel="stylesheet" type="text/css" href="scripts/website_02.css">

    <title>CTC Imagery</title>

  </head>
  <body>
    
    

<!-- MENU -->
<!-- MENU -->
<!-- MENU -->
    
    <input type="checkbox" id="menu_checkbox">
    <label for="menu_checkbox" id="menu_label">=</label>

    <div id="menu_container">
        <div id="menu_header"><p>MENU</p></div>
        <div id="menu_links">
            <a href="#home">Home</a>
            <a href="#link_1">Link 1</a>
            <a href="#link_2">Link 2</a>
            <a href="#link_3">Link 3</a>
            <a href="#about">About</a>
            <a href="#contact">Contact</a>
        </div>
    </div>
    
<!-- MENU -->
<!-- MENU -->
<!-- MENU -->
    
    
    
    
    
    <div id="home">
        <h1>HOME</h1>
        <p>Welcome to the home page.</p>
    </div>

    <div id="link_1">
        <h1>LINK 1</h1>
        <p>Welcome to the Link 1 page.</p>
    </div>

    <div id="link_2">
        <h1>LINK 2</h1>
        <p>Welcome to the Link 2 page.</p>
    </div>

    <div id="link_3">
        <h1>LINK 3</h1>
        <p>Welcome to the Link 3 page.</p>
    </div>

    <div id="about">
        <h1>ABOUT</h1>
        <p>Welcome to the About page.</p>
    </div>

    <div id="contact">
        <h1>CONTACT</h1>
        <p>Welcome to the Contact page.</p>
    </div>

  </body>
</html>

body {
    margin: 0;
    padding: 0;
    background-color: rgb(25, 25, 25);
    color: white;
    font-family: 'Trebuchet MS', 'Lucida Sans Unicode', 'Lucida Grande', 'Lucida Sans', Arial, sans-serif;
}

h1  {
    color: cyan;
}
p {
    color: darkcyan;
}





/*-- MENU --*/
/*-- MENU --*/
/*-- MENU --*/

#menu_label {
    position: absolute;
    top: 0;
    left: 0;
    width: 50px;
    height: 50px;
    z-index: 90000;
    
    cursor: pointer;

    text-align: center;
    font-size: 30px;
    line-height: 50px;
    color: rgba(0, 255, 255, .5);

    -webkit-transition: all .5s cubic-bezier(0, .5, .25, 1);
    -moz-transition: all .5s cubic-bezier(0, .5, .25, 1);
    transition: all .5s cubic-bezier(0, .5, .25, 1);
}
#menu_label:hover {
    color: cyan;
    text-shadow: 0px 0px 10px cyan;
}

#menu_container {
    position: absolute;
    top: 125px;
    left: -300px;
    width: 200px;
    height: 350px;
    background-color: rgb(0, 90, 90);
    opacity: 0;
    box-shadow: -10px 30px 10px 1px rgba(0, 0, 0, .5);

    z-index: 99999;

    -webkit-transform: skewY(-10deg);
    -moz-transform: skewY(-10deg);
    transform: skewY(-10deg);

    -webkit-transition: all .5s cubic-bezier(0, .5, .25, 1);
    -moz-transition: all .5s cubic-bezier(0, .5, .25, 1);
    transition: all .5s cubic-bezier(0, .5, .25, 1);
}

#menu_container::before {
    content: "";
    position: absolute;
    top: -14px;
    left: -7px;
    width: 100%;
    height: 4%;
    background-color: rgb(0, 110, 110);

    z-index: 99999;

    -webkit-transform: skewX(45deg);
    -moz-transform: skewX(45deg);
    transform: skewX(45deg);
}
#menu_container::after {
    content: "";
    position: absolute;
    top: -7px;
    left: -14px;
    width: 7%;
    height: 100%;
    background-color: rgb(0, 70, 70);

    z-index: 99999;

    -webkit-transform: skewY(45deg);
    -moz-transform: skewY(45deg);
    transform: skewY(45deg);
}

#menu_header {
    width: 100%;
    height: 60px;
    margin-top: -10px;
    margin-left: -100px;
    margin-bottom: 5px;
    box-shadow: -5px -5px 5px 0px rgba(0, 0, 0, .5);
    opacity: 0;

    color: rgba(0, 255, 255, .6);
    text-align: center;
    line-height: 60px;

    background: -webkit-linear-gradient(rgba(0, 139, 139, .5), rgba(0, 0, 0, .6));
    background: -moz-linear-gradient(rgba(0, 139, 139, .5), rgba(0, 0, 0, .6));
    background: linear-gradient(rgba(0, 139, 139, .5), rgba(0, 0, 0, .6));

    -webkit-transform: translateX(5px) translateY(5px);
    -moz-transform: translateX(5px) translateY(5px);
    transform: translateX(5px) translateY(5px);

    -webkit-transition: all .5s ease-out;
    -moz-transition: all .5s ease-out;
    transition: all .5s ease-out;
}

#menu_links a {
    text-decoration: none;
    display: block;
    width: 100%;
    height: 40px;
    margin-left: -100px;
    margin-bottom: 9px;
    background-color: rgba(0, 0, 0, .5);
    box-shadow: -5px -5px 5px 0px rgba(0, 0, 0, .5);
    border-left: solid thin rgba(0, 139, 139, .25);
    opacity: 0;

    color: rgba(0, 255, 255, .6);
    line-height: 40px;
    text-indent: 5px;

    -webkit-transform: translateX(5px) translateY(5px);
    -moz-transform: translateX(5px) translateY(5px);
    transform: translateX(5px) translateY(5px);

    -webkit-transition: all .5s ease-in;
    -moz-transition: all .5s ease-in;
    transition: all .5s ease-in;
}
#menu_links a:hover {
    color: cyan;
    text-indent: 10px;
    background-color: rgba(0, 0, 0, .65);
    box-shadow: -10px -5px 5px 0px rgba(0, 0, 0, .5);
    border-left: solid thin cyan;

    -webkit-transform: translateX(10px) translateY(10px);
    -moz-transform: translateX(10px) translateY(10px);
    transform: translateX(10px) translateY(10px);

    -webkit-transition: all .25s ease-out;
    -moz-transition: all .25s ease-out;
    transition: all .25s ease-out;
}

#menu_checkbox {
    display: none;
}
#menu_checkbox:checked ~ #menu_container {
    top: 50px;
    left: 75px;
    opacity: 1;
}
#menu_checkbox:checked ~ #menu_container > #menu_header {
    opacity: 1;
    margin-left: 0;
}
#menu_checkbox:checked ~ #menu_container > #menu_links a {
    opacity: 1;
    margin-left: 0;
}

@media (max-width: 700px) {
    #menu_container {
        width: 100px;
    }
    #menu_checkbox:checked ~ #menu_container {
        top: 50px;
        left: 25px;
        opacity: 1;
    }
    #menu_container::after {
        content: "";
        position: absolute;
        top: -7px;
        left: -14px;
        width: 14%;
        height: 100%;
        background-color: rgb(0, 70, 70);
    
        z-index: 99999;
    
        -webkit-transform: skewY(45deg);
        -moz-transform: skewY(45deg);
        transform: skewY(45deg);
    }
}

/*-- MENU --*/
/*-- MENU --*/
/*-- MENU --*/





#home {
    position: absolute;
    top: 0;
    left: 5%;
    display: block;
    width: 90%;
    height: 0px;
    margin-top: 110px;
    background: -webkit-linear-gradient(rgb(40, 40, 40), rgb(60, 60, 60));
    background: -moz-linear-gradient(rgb(40, 40, 40), rgb(60, 60, 60));
    background: linear-gradient(rgb(40, 40, 40), rgb(60, 60, 60));
    opacity: 0;

    z-index: -99999;
    text-align: center;

    -webkit-transform: skewY(-10deg);
    -moz-transform: skewY(-10deg);
    transform: skewY(-10deg);

    -webkit-transition: all .5s cubic-bezier(0, .5, .25, 1);
    -moz-transition: all .5s cubic-bezier(0, .5, .25, 1);
    transition: all .5s cubic-bezier(0, .5, .25, 1);
}
#home::before {
    content: "";
    position: absolute;
    top: -21px;
    left: -10px;
    width: 100%;
    height: 4%;
    background-color: rgb(70, 70, 70);

    z-index: 99999;

    -webkit-transform: skewX(45deg);
    -moz-transform: skewX(45deg);
    transform: skewX(45deg);
}
#home::after {
    content: "";
    position: absolute;
    top: -10px;
    left: -21px;
    width: 20px;
    height: 100%;
    background: -webkit-linear-gradient(rgb(30, 30, 30), rgb(50, 50, 50));
    background: -moz-linear-gradient(rgb(30, 30, 30), rgb(50, 50, 50));
    background: linear-gradient(rgb(30, 30, 30), rgb(50, 50, 50));

    z-index: 99999;

    -webkit-transform: skewY(45deg);
    -moz-transform: skewY(45deg);
    transform: skewY(45deg);
}
#home:target {
    height: 500px;
    opacity: 1;

    -webkit-transition-delay: .25s;
    -moz-transition-delay: .25s;
    transition-delay: .25s;
}
#home h1 {
    margin-left: -50px;
    opacity: 0;

    -webkit-transition: all .5s cubic-bezier(0, .5, .25, 1);
    -moz-transition: all .5s cubic-bezier(0, .5, .25, 1);
    transition: all .5s cubic-bezier(0, .5, .25, 1);
}
#home:target h1 {
    margin-left: 0;
    opacity: 1;

    -webkit-transition-delay: .4s;
    -moz-transition-delay: .4s;
    transition-delay: .4s;
}
#home p {
    margin-left: -50px;
    opacity: 0;

    -webkit-transition: all .5s cubic-bezier(0, .5, .25, 1);
    -moz-transition: all .5s cubic-bezier(0, .5, .25, 1);
    transition: all .5s cubic-bezier(0, .5, .25, 1);
}
#home:target p {
    margin-left: 0;
    opacity: 1;

    -webkit-transition-delay: .5s;
    -moz-transition-delay: .5s;
    transition-delay: .5s;
}

#link_1 {
    position: absolute;
    top: 0;
    left: 5%;
    display: block;
    width: 90%;
    height: 0px;
    margin-top: 110px;
    background: -webkit-linear-gradient(rgb(40, 40, 40), rgb(60, 60, 60));
    background: -moz-linear-gradient(rgb(40, 40, 40), rgb(60, 60, 60));
    background: linear-gradient(rgb(40, 40, 40), rgb(60, 60, 60));
    opacity: 0;

    z-index: -99999;
    text-align: center;

    -webkit-transform: skewY(-10deg);
    -moz-transform: skewY(-10deg);
    transform: skewY(-10deg);

    -webkit-transition: all .5s cubic-bezier(0, .5, .25, 1);
    -moz-transition: all .5s cubic-bezier(0, .5, .25, 1);
    transition: all .5s cubic-bezier(0, .5, .25, 1);
}
#link_1::before {
    content: "";
    position: absolute;
    top: -21px;
    left: -10px;
    width: 100%;
    height: 4%;
    background-color: rgb(70, 70, 70);

    z-index: 99999;

    -webkit-transform: skewX(45deg);
    -moz-transform: skewX(45deg);
    transform: skewX(45deg);
}
#link_1::after {
    content: "";
    position: absolute;
    top: -10px;
    left: -21px;
    width: 20px;
    height: 100%;
    background: -webkit-linear-gradient(rgb(30, 30, 30), rgb(50, 50, 50));
    background: -moz-linear-gradient(rgb(30, 30, 30), rgb(50, 50, 50));
    background: linear-gradient(rgb(30, 30, 30), rgb(50, 50, 50));

    z-index: 99999;

    -webkit-transform: skewY(45deg);
    -moz-transform: skewY(45deg);
    transform: skewY(45deg);
}
#link_1:target {
    height: 500px;
    opacity: 1;

    -webkit-transition-delay: .25s;
    -moz-transition-delay: .25s;
    transition-delay: .25s;
}
#link_1 h1 {
    margin-left: -50px;
    opacity: 0;

    -webkit-transition: all .5s cubic-bezier(0, .5, .25, 1);
    -moz-transition: all .5s cubic-bezier(0, .5, .25, 1);
    transition: all .5s cubic-bezier(0, .5, .25, 1);
}
#link_1:target h1 {
    margin-left: 0;
    opacity: 1;

    -webkit-transition-delay: .4s;
    -moz-transition-delay: .4s;
    transition-delay: .4s;
}
#link_1 p {
    margin-left: -50px;
    opacity: 0;

    -webkit-transition: all .5s cubic-bezier(0, .5, .25, 1);
    -moz-transition: all .5s cubic-bezier(0, .5, .25, 1);
    transition: all .5s cubic-bezier(0, .5, .25, 1);
}
#link_1:target p {
    margin-left: 0;
    opacity: 1;

    -webkit-transition-delay: .5s;
    -moz-transition-delay: .5s;
    transition-delay: .5s;
}

#link_2 {
    position: absolute;
    top: 0;
    left: 5%;
    display: block;
    width: 90%;
    height: 0px;
    margin-top: 110px;
    background: -webkit-linear-gradient(rgb(40, 40, 40), rgb(60, 60, 60));
    background: -moz-linear-gradient(rgb(40, 40, 40), rgb(60, 60, 60));
    background: linear-gradient(rgb(40, 40, 40), rgb(60, 60, 60));
    opacity: 0;

    z-index: -99999;
    text-align: center;

    -webkit-transform: skewY(-10deg);
    -moz-transform: skewY(-10deg);
    transform: skewY(-10deg);

    -webkit-transition: all .5s cubic-bezier(0, .5, .25, 1);
    -moz-transition: all .5s cubic-bezier(0, .5, .25, 1);
    transition: all .5s cubic-bezier(0, .5, .25, 1);
}
#link_2::before {
    content: "";
    position: absolute;
    top: -21px;
    left: -10px;
    width: 100%;
    height: 4%;
    background-color: rgb(70, 70, 70);

    z-index: 99999;

    -webkit-transform: skewX(45deg);
    -moz-transform: skewX(45deg);
    transform: skewX(45deg);
}
#link_2::after {
    content: "";
    position: absolute;
    top: -10px;
    left: -21px;
    width: 20px;
    height: 100%;
    background: -webkit-linear-gradient(rgb(30, 30, 30), rgb(50, 50, 50));
    background: -moz-linear-gradient(rgb(30, 30, 30), rgb(50, 50, 50));
    background: linear-gradient(rgb(30, 30, 30), rgb(50, 50, 50));

    z-index: 99999;

    -webkit-transform: skewY(45deg);
    -moz-transform: skewY(45deg);
    transform: skewY(45deg);
}
#link_2:target {
    height: 500px;
    opacity: 1;

    -webkit-transition-delay: .25s;
    -moz-transition-delay: .25s;
    transition-delay: .25s;
}
#link_2 h1 {
    margin-left: -50px;
    opacity: 0;

    -webkit-transition: all .5s cubic-bezier(0, .5, .25, 1);
    -moz-transition: all .5s cubic-bezier(0, .5, .25, 1);
    transition: all .5s cubic-bezier(0, .5, .25, 1);
}
#link_2:target h1 {
    margin-left: 0;
    opacity: 1;

    -webkit-transition-delay: .4s;
    -moz-transition-delay: .4s;
    transition-delay: .4s;
}
#link_2 p {
    margin-left: -50px;
    opacity: 0;

    -webkit-transition: all .5s cubic-bezier(0, .5, .25, 1);
    -moz-transition: all .5s cubic-bezier(0, .5, .25, 1);
    transition: all .5s cubic-bezier(0, .5, .25, 1);
}
#link_2:target p {
    margin-left: 0;
    opacity: 1;

    -webkit-transition-delay: .5s;
    -moz-transition-delay: .5s;
    transition-delay: .5s;
}

#link_3 {
    position: absolute;
    top: 0;
    left: 5%;
    display: block;
    width: 90%;
    height: 0px;
    margin-top: 110px;
    background: -webkit-linear-gradient(rgb(40, 40, 40), rgb(60, 60, 60));
    background: -moz-linear-gradient(rgb(40, 40, 40), rgb(60, 60, 60));
    background: linear-gradient(rgb(40, 40, 40), rgb(60, 60, 60));
    opacity: 0;

    z-index: -99999;
    text-align: center;

    -webkit-transform: skewY(-10deg);
    -moz-transform: skewY(-10deg);
    transform: skewY(-10deg);

    -webkit-transition: all .5s cubic-bezier(0, .5, .25, 1);
    -moz-transition: all .5s cubic-bezier(0, .5, .25, 1);
    transition: all .5s cubic-bezier(0, .5, .25, 1);
}
#link_3::before {
    content: "";
    position: absolute;
    top: -21px;
    left: -10px;
    width: 100%;
    height: 4%;
    background-color: rgb(70, 70, 70);

    z-index: 99999;

    -webkit-transform: skewX(45deg);
    -moz-transform: skewX(45deg);
    transform: skewX(45deg);
}
#link_3::after {
    content: "";
    position: absolute;
    top: -10px;
    left: -21px;
    width: 20px;
    height: 100%;
    background: -webkit-linear-gradient(rgb(30, 30, 30), rgb(50, 50, 50));
    background: -moz-linear-gradient(rgb(30, 30, 30), rgb(50, 50, 50));
    background: linear-gradient(rgb(30, 30, 30), rgb(50, 50, 50));

    z-index: 99999;

    -webkit-transform: skewY(45deg);
    -moz-transform: skewY(45deg);
    transform: skewY(45deg);
}
#link_3:target {
    height: 500px;
    opacity: 1;

    -webkit-transition-delay: .25s;
    -moz-transition-delay: .25s;
    transition-delay: .25s;
}
#link_3 h1 {
    margin-left: -50px;
    opacity: 0;

    -webkit-transition: all .5s cubic-bezier(0, .5, .25, 1);
    -moz-transition: all .5s cubic-bezier(0, .5, .25, 1);
    transition: all .5s cubic-bezier(0, .5, .25, 1);
}
#link_3:target h1 {
    margin-left: 0;
    opacity: 1;

    -webkit-transition-delay: .4s;
    -moz-transition-delay: .4s;
    transition-delay: .4s;
}
#link_3 p {
    margin-left: -50px;
    opacity: 0;

    -webkit-transition: all .5s cubic-bezier(0, .5, .25, 1);
    -moz-transition: all .5s cubic-bezier(0, .5, .25, 1);
    transition: all .5s cubic-bezier(0, .5, .25, 1);
}
#link_3:target p {
    margin-left: 0;
    opacity: 1;

    -webkit-transition-delay: .5s;
    -moz-transition-delay: .5s;
    transition-delay: .5s;
}

#about {
    position: absolute;
    top: 0;
    left: 5%;
    display: block;
    width: 90%;
    height: 0px;
    margin-top: 110px;
    background: -webkit-linear-gradient(rgb(40, 40, 40), rgb(60, 60, 60));
    background: -moz-linear-gradient(rgb(40, 40, 40), rgb(60, 60, 60));
    background: linear-gradient(rgb(40, 40, 40), rgb(60, 60, 60));
    opacity: 0;

    z-index: -99999;
    text-align: center;

    -webkit-transform: skewY(-10deg);
    -moz-transform: skewY(-10deg);
    transform: skewY(-10deg);

    -webkit-transition: all .5s cubic-bezier(0, .5, .25, 1);
    -moz-transition: all .5s cubic-bezier(0, .5, .25, 1);
    transition: all .5s cubic-bezier(0, .5, .25, 1);
}
#about::before {
    content: "";
    position: absolute;
    top: -21px;
    left: -10px;
    width: 100%;
    height: 4%;
    background-color: rgb(70, 70, 70);

    z-index: 99999;

    -webkit-transform: skewX(45deg);
    -moz-transform: skewX(45deg);
    transform: skewX(45deg);
}
#about::after {
    content: "";
    position: absolute;
    top: -10px;
    left: -21px;
    width: 20px;
    height: 100%;
    background: -webkit-linear-gradient(rgb(30, 30, 30), rgb(50, 50, 50));
    background: -moz-linear-gradient(rgb(30, 30, 30), rgb(50, 50, 50));
    background: linear-gradient(rgb(30, 30, 30), rgb(50, 50, 50));

    z-index: 99999;

    -webkit-transform: skewY(45deg);
    -moz-transform: skewY(45deg);
    transform: skewY(45deg);
}
#about:target {
    height: 500px;
    opacity: 1;

    -webkit-transition-delay: .25s;
    -moz-transition-delay: .25s;
    transition-delay: .25s;
}
#about h1 {
    margin-left: -50px;
    opacity: 0;

    -webkit-transition: all .5s cubic-bezier(0, .5, .25, 1);
    -moz-transition: all .5s cubic-bezier(0, .5, .25, 1);
    transition: all .5s cubic-bezier(0, .5, .25, 1);
}
#about:target h1 {
    margin-left: 0;
    opacity: 1;

    -webkit-transition-delay: .4s;
    -moz-transition-delay: .4s;
    transition-delay: .4s;
}
#about p {
    margin-left: -50px;
    opacity: 0;

    -webkit-transition: all .5s cubic-bezier(0, .5, .25, 1);
    -moz-transition: all .5s cubic-bezier(0, .5, .25, 1);
    transition: all .5s cubic-bezier(0, .5, .25, 1);
}
#about:target p {
    margin-left: 0;
    opacity: 1;

    -webkit-transition-delay: .5s;
    -moz-transition-delay: .5s;
    transition-delay: .5s;
}

#contact {
    position: absolute;
    top: 0;
    left: 5%;
    display: block;
    width: 90%;
    height: 0px;
    margin-top: 110px;
    background: -webkit-linear-gradient(rgb(40, 40, 40), rgb(60, 60, 60));
    background: -moz-linear-gradient(rgb(40, 40, 40), rgb(60, 60, 60));
    background: linear-gradient(rgb(40, 40, 40), rgb(60, 60, 60));
    opacity: 0;

    z-index: -99999;
    text-align: center;

    -webkit-transform: skewY(-10deg);
    -moz-transform: skewY(-10deg);
    transform: skewY(-10deg);

    -webkit-transition: all .5s cubic-bezier(0, .5, .25, 1);
    -moz-transition: all .5s cubic-bezier(0, .5, .25, 1);
    transition: all .5s cubic-bezier(0, .5, .25, 1);
}
#contact::before {
    content: "";
    position: absolute;
    top: -21px;
    left: -10px;
    width: 100%;
    height: 4%;
    background-color: rgb(70, 70, 70);

    z-index: 99999;

    -webkit-transform: skewX(45deg);
    -moz-transform: skewX(45deg);
    transform: skewX(45deg);
}
#contact::after {
    content: "";
    position: absolute;
    top: -10px;
    left: -21px;
    width: 20px;
    height: 100%;
    background: -webkit-linear-gradient(rgb(30, 30, 30), rgb(50, 50, 50));
    background: -moz-linear-gradient(rgb(30, 30, 30), rgb(50, 50, 50));
    background: linear-gradient(rgb(30, 30, 30), rgb(50, 50, 50));

    z-index: 99999;

    -webkit-transform: skewY(45deg);
    -moz-transform: skewY(45deg);
    transform: skewY(45deg);
}
#contact:target {
    height: 500px;
    opacity: 1;

    -webkit-transition-delay: .25s;
    -moz-transition-delay: .25s;
    transition-delay: .25s;
}
#contact h1 {
    margin-left: -50px;
    opacity: 0;

    -webkit-transition: all .5s cubic-bezier(0, .5, .25, 1);
    -moz-transition: all .5s cubic-bezier(0, .5, .25, 1);
    transition: all .5s cubic-bezier(0, .5, .25, 1);
}
#contact:target h1 {
    margin-left: 0;
    opacity: 1;

    -webkit-transition-delay: .4s;
    -moz-transition-delay: .4s;
    transition-delay: .4s;
}
#contact p {
    margin-left: -50px;
    opacity: 0;

    -webkit-transition: all .5s cubic-bezier(0, .5, .25, 1);
    -moz-transition: all .5s cubic-bezier(0, .5, .25, 1);
    transition: all .5s cubic-bezier(0, .5, .25, 1);
}
#contact:target p {
    margin-left: 0;
    opacity: 1;

    -webkit-transition-delay: .5s;
    -moz-transition-delay: .5s;
    transition-delay: .5s;
}

@media (max-width: 700px) {
    #contact {
        left: 10%;
        width: 80%;
    }
}

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