/* styles.css */
body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    width: 100%;
    padding-bottom: 50px;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.nav-button:hover{
    background-color: black; 
    color: white;
}

.nav-button {
    color: #000;
    cursor: pointer;
    text-decoration: none;
    background-color: #fff;
    border: 2px solid black;
    border-radius: 6px 6px 3px 3px; 
    padding: 8px 16px;
    transition: background-color 0.3s, color 0.3s;
    margin: 15px;
    
}
.envelopes {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
    padding: 20px;
}

.envelope {
    width: 200px;
    text-align: center;
    cursor: pointer;
    position: relative;
}

.envelope-img {
    width: 100%;
    max-width: 600px; /* Set a maximum width if needed */
    transition: opacity 0.3s ease-in-out;
}

.envelope-img.open {
    opacity: 0;
    position: absolute;
    top: 0;
    left: 0;
}

.envelope:hover .envelope-img.closed {
    opacity: 0;
}

.envelope:hover .envelope-img.open {
    opacity: 1;
}

.popup {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    justify-content: center;
    align-items: center;
}

.popup-content {
    background-color: white;
    padding: 20px;
    border-radius: 5px;
    width: 50%;
}

.close-btn {
    float: right;
    cursor: pointer;
    font-size: 20px;
}
.knowledge{
    display: grid;
    justify-content: center;
    padding: 20px;
}
h1{
    padding-left: 20px;
}
.element{
    display: column;
    text-align: justify;
    padding: 10px;
}
.Steps{
    padding: 20px;
    text-align: justify;
    width: 90%;
    display: grid;
    justify-content: center;
}
.Steps li{
    margin-bottom: 6px;
    list-style: none;
    display: grid;
}
footer{
    background-color: #000;
    color: #fff;
    font-size: medium;
    text-align: center;
    position: fixed;
    bottom: 0;
    width: 100%;
}
footer p{
    padding: 5px;
}
footer a{
    color: rgb(72, 158, 229);
    text-decoration: none;
}
@media (min-width: 768px) {
    .knowledge {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Grid layout for smaller screens */
@media (max-width: 767px) {
    .knowledge {
        grid-template-columns: 1fr;
    }
    .popup-content {
        padding: 20px;
        border-radius: 5px;
        width: 100%;
    }   
}