body {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-weight: 300;
    font-family: 'Raleway', sans-serif;
    background: #fff;
/*    background: radial-gradient(ellipse at center, rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 0.05) 80%, rgba(0, 0, 0, 0.15) 100%);*/
    overflow: hidden;
    transform-style: preserve-3d;
}

h2 {
    text-align: center;
}
.registerkarten-nav {
    position: relative;
    top: 5rem;
    width: 40rem;
    margin: 0 auto;
}

input[type='radio'],
.hide {
    display: none;
    top: 5rem;
}

input[type='radio']:checked + section {
    top: 0;

}

.container {

    width: 100%;
    /*            height: 100vh;*/
    transition: all 500ms;
    transform-style: preserve-3d;
}

.container section {
    position: absolute;
    top: 100vh;
    width: 100%;
    height: 100vh;
    transition: top 500ms;
    transform-style: preserve-3d;
}

.container section.home {
    background: #2196f3;
}

.container section.about {
    background: #ffc107;
}

.container section.work {
    background: #4caf50;
}

.container section.contact {
    background: #f44336;
}

.container section.flipperen {
    background: red;
}

.container section.fietsen {
    background: blue;
}

.container section h1 {
    margin: 0;
    font-size: 64px;
    transform: translate(0, 40vh);
    text-align: center;
    color: rgba(255, 255, 255, 0.85);
    transition: transform 500ms;
    transform-style: preserve-3d;
}

.container section label {
    display: block;
    position: absolute;
    top: 0;
    width: 100%;
    height: 100vh;
}

.menu {
    display: block;
    position: fixed;
    top: 20px;
    left: 25px;
    z-index: 1000;
    transform: 0deg;
    transition: all 200ms;
    width: 35px;
    height: 4px;
    background: rgba(0, 0, 0, 0.25);
}

.menu::before,
.menu::after {
    content: '';
    display: block;
    position: absolute;
    width: 35px;
    height: 4px;
    background: rgba(0, 0, 0, 0.25);
    transition: all 200ms;
}

.menu::before {
    top: 10px;
}

.menu::after {
    top: 20px;
}


.menu div,
.menu div label:nth-child(1) {
    display: block;
    width: 35px;
    height: 35px;
    position: absolute;
    top: -6px;
}

.menu div label:nth-child(2) {
    display: none;
}

#menu:checked + .container {
    transform: scale(0.65) translateY(-18%);
    transition: all 500ms;
    transform-style: preserve-3d;
}

#menu:checked + .container section {
    cursor: pointer;
    overflow: hidden;
    opacity: 1;
    box-shadow: 0 0 40px rgba(0, 0, 0, 0.25);
    transform-style: preserve-3d;
}

#menu:checked + .container section h1 {
    transform: scale(0.5);
    transform-style: preserve-3d;
}

#menu:checked + .container + .menu {
    top: 30px;
    left: 20px;
    transform: rotate(225deg);
    transition: all 200ms;
    transform-origin: center center;
    background: #646464;
}

#menu:checked + .container + .menu::before,
#menu:checked + .container + .menu::after {
    background: #646464;
    transition: all 200ms;
}

#menu:checked + .container + .menu::before {
    opacity: 0;
    transition: opacity 0s;
}

#menu:checked + .container + .menu::after {
    margin-top: -20px;
    transform: rotate(90deg);
}

#menu:checked + .container + .menu div label:nth-child(2) {
    display: block;
    width: 35px;
    height: 35px;
    position: absolute;
    top: -6px;
}

#menu:checked + .container + .menu div label:nth-child(1) {
    display: none;
}

.container section.home {
    z-index: 99;
}

.container section.about {
    z-index: 98;
}

.container section.work {
    z-index: 97;
}

.container section.contact {
    z-index: 96;
}

#menu:checked + .container section.home {
    top: 192px;
}

#menu:checked + .container section.home:hover {
    top: 188px;
}

#menu:checked + .container section.about {
    top: 132px;
}

#menu:checked + .container section.about:hover {
    top: 128px;
}

#menu:checked + .container section.work {
    top: 72px;
}

#menu:checked + .container section.work:hover {
    top: 68px;
}

#menu:checked + .container section.contact {
    top: 12px;
}

#menu:checked + .container section.contact:hover {
    top: 8px;
}