* {
    margin: 0;
    padding: 0;
}

.header {
    background-color: black;
    display: flex;
    justify-content: space-between;
    align-items: center;
}


.navbar ul {
    width: 600px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: auto 20px;
}

.navbar li {
    margin: 10px;
    list-style: none;
}

.navbar a {
    font-weight: bold;
    font-family: 'Times New Roman', Times, serif;
    text-decoration: none;
    color: azure;
    font-size: 20px;
}

.navbar a:hover {
    color: rgb(184, 183, 183);
}

#slidebar {
    display: none;
}

#reload {
    margin: 20px;
    display: none;
    width: 30px;
    font-size: 25px;
    background-color: black;
    color: white;
    border: 2px solid white;
    border-radius: 10px;
}

#container {
    background-image: linear-gradient(to right, rgb(117, 117, 117), black);
    padding: 20px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.heading {
    color: #ffffff;
    text-align: center;

}

#con {
    display: block;
    margin: 30px auto;
    border: 2px dashed rgb(182, 181, 181);
    border-radius: 5px;
    width: 70%;
    font-size: 20px;
    height: 300px;
    padding: 10px
}


.opbutton {
    color: white;
    border-radius: 8px;
    background-color: #3939b3;
    border: 2px solid blue;
    padding: 10px 30px;
    font-size: 20px;
    font-weight: bold;
    font-family: 'Lucida Sans', 'Lucida Sans Regular', 'Lucida Grande', 'Lucida Sans Unicode', Geneva, Verdana, sans-serif;
}

.opbutton:hover {
    background-color: #42cff5;
    color: black;
}

.hide {
    display: none;
    margin: 20px;
}

.h2head {
    color: #ffffff;
    font-family: Verdana, Geneva, Tahoma, sans-serif;
}

#preview {
    width: 70%;
}

.prebox {
    background-color: #b3f0ff;
    color: black;
    font-family: monospace;
    border: 5px dashed blue;
    border-radius: 10px;
    padding: 10px;
    width: 70%;
    font-size: 15px;
}

.instruction {
    width: 100%;
    color: #e6faff;
}

.instruction h2 {
    font-size: 25px;
    font-family: 'Times New Roman', Times, serif;
    margin: 20px;
}

.instruction p {
    margin: 15px;
    font-size: 20px;
    font-family: 'Lucida Sans', 'Lucida Sans Regular', 'Lucida Grande', 'Lucida Sans Unicode', Geneva, Verdana, sans-serif;
}

footer {
    display: flex;
    padding: 20px 0px;
    background-color: black;
    justify-content: center;
    align-items: center;
    color: #ffffff;
    font-size: 20px;
    font-weight: bold;
}

#simple_table {
    font-family: arial, sans-serif;
    border-collapse: collapse;
    width: 100%;
    background-color: #e6faff;
    color: black;
}

#simple_table td,
#simple_table th {
    text-align: left;
    padding: 8px;
    border: 1px solid #ffffff;
}

#simple_table tr:nth-child(even) {
    background-color: #b3f0ff;
}

#simple_table tr:hover {
    background-color: #80ff80;
}

#simple_table tr>th {
    background: #0000ff;
    color: #ffffff;
}

@media only screen and (max-width: 1000px) {
    .navbar {
        display: none;
    }

    #slidebar {
        display: block;
        width: 50px;
        font-size: 25px;
        background-color: black;
        color: white;
        border: 2px solid white;
        border-radius: 10px;
    }
}