* {
    margin: 0;
    padding: 0;
}

body {
    background-color: #171616;
    font-family: sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
}

.ctn {
    perspective: 2000px;
    width: 400px;
    height: 550px;
}

.ctn:hover .card {
    transform: rotateY(180deg);
}

.card {
    transform-style: preserve-3d;
    width: 100%;
    height: 100%;
    cursor: pointer;
    position: relative;
    transition: transform 1500ms;
}

.front, .back {
    width: 100%;
    height: 100%;
    position: absolute;
    border-radius: 11px;
    backface-visibility: hidden;
}

.webentwickler {
    color: white;
    display: flex;
    align-items:flex-end;
    justify-content: center;
    height: 95%;
}

.front {
    background-image: url(marcel-groß.jpg);
    background-size: cover;
    background-position: center;
}

.back {
    background-color: #282828;
    padding: 12px;
    transform: rotateY(180deg);
}

.circle-img {
    background-image: url(marcel-klein.jpg);
    background-size: cover;
    background-position: center;
    width: 120px;
    height: 120px;
    border-radius: 100px;
    border: 5px solid #eee;
}

.circle-img-ctn {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}

h1 {
    color:#eee;
    margin-top: 12px;
}

h2 {
    color: #eee;
}

.line-ctn {
    margin: 0 auto;
    width: 90%;
    margin-top: 24px;
}

.line-ctn span {
    display: inline-block;
    width: 100%;
    height: 15px;
    background-color: #eee;
    border-radius: 2px;
    position: relative;
}

.line-ctn span div {
    position:absolute;
    height: 100%;
    background-color: red;
}

.fill-el--1 {
    width: 75%;
}

.fill-el--2 {
    width: 60%;
}

.fill-el--3 {
    width: 55%;
}

.fill-el--4 {
    width: 50%;
}

.fill-el--5 {
    width: 65%;
}