body {
    display: flex;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    font-family: sans-serif;
    background-color: #f0f0f0;
    flex-direction: column;
}
.header {
    display: flex;
    padding: 1em;
    flex-direction: row;
    justify-content: space-evenly;
    width: 100%;
}
.vertical {
    display: flex;
    padding: 1em;
    flex-direction: row;
    justify-content: space-evenly;
    width: 100%;
}
h1 {
    font-size: 2em;
    margin-bottom: 0.5em;
}

h3 {
    margin-top: 0;
    margin-bottom: 1em;
}

a {
    color: #333;
    text-decoration: none;
    margin: 1 0.5em;
    padding: 0.5em 1em;
    border: 1px solid #ccc;
    border-radius: 5px;
    transition: all 0.2s ease-in-out;
}
td a {
    color: #33f;
    text-decoration: none;
    margin: 0;
    padding: 0;
    border: 0px;
    border-radius: 0px;
    transition: 0;
}
a:hover {
    background-color: #eee;
}
td {
    border: 1px solid black;
    padding: 0.2em 1em;
}
table {
    border-collapse: collapse;
}
/* The alert message box */
.error {
    padding: 20px;
    background-color: #f44336; /* Red */
    color: white;
    margin-bottom: 15px;
}

.notification {
    padding: 20px;
    background-color: green;
    color: white;
    margin-bottom: 15px;
}

/* The close button */
.closebtn {
    margin-left: 15px;
    color: white;
    font-weight: bold;
    float: right;
    font-size: 22px;
    line-height: 20px;
    cursor: pointer;
    transition: 0.3s;
}

/* When moving the mouse over the close button */
.closebtn:hover {
    color: black;
}