* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-color: #f4f4f4;
    --text-color: #333;
    --second-text-color: #555;
    --main-color: #00abf0;
    --border: .125rem solid #00abf0;
    --b-color: #081b29;
    --box-shadow: 0 0 .6rem rgba(0, 0, 0, .2);
}

.wrapper {
    width: 100%;
    height: 100%;
    background-color: var(--bg-color);
}

.container {
    width: 80%;
    margin: 0 auto;
    padding: 50px 0;
}

.container h1{
    color: var(--b-color);
    font-size: 3rem;
    border: var(--border);
    display: flex;
    justify-content: center;
    padding: .5rem;
}

.part {
    display: flex;
    justify-content: center;
}

.cards {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.card {
    width: 400px;
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    margin: 2.5rem;
    margin-left: 8rem;
    justify-content: center;
    cursor: pointer;
}

.card:hover{
    box-shadow: var(--box-shadow);
}

.card-image {
    position: relative;
    width: 100%;
}

.card-image img {
    width: 100%;
    height: auto;
    object-fit: cover;
    opacity: 1;
    transition: opacity 0.3s ease;
    border-bottom: var(--border);
}

.card-image:hover img {
    opacity: 0;
}

.video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 0.3s ease;
    border-bottom: var(--border);
}

.card-image:hover .video {
    opacity: 1;
    z-index: 1;
}

.card-content {
    padding: 20px;
}

.card-content h3 {
    color: var(--text-color);
    margin-bottom: 10px;
    font-size: 1.5rem;
}

.card-content h6 {
    color: var(--text-color);
    margin-bottom: 10px;
    font-size: 1rem;
}

.card-content p {
    color: var(--second-text-color);
    margin-bottom: 20px;
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    background-color: #007bff;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    transition:  0.3s ease;
}

.btn:hover{
    background-color: var(--white-color);
    color: var(--main-color);
    border: 1px solid var(--main-color);
}