body {
    margin: 0;
}

main {
    margin: 2em;
}

ul {
    list-style: none;
    padding: 0;
}

form {
    display: inline-grid;
    width: 100%;
}

form > input {
    margin: 1em;
    padding: 1em 1.75em;
    border: 1px solid #ccc;
}

input[type=submit] {
    display: flex;
    float: end;
}

li {
    padding-left: 4em;
    margin-bottom: 2em;
    position: relative;
}

li::before {
    content: "";
    display: block;
    width: 2em;
    height: 2em;
    background-color: rgb(208, 208, 208);
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
}

button[disabled] {
    opacity: 0.5;
    cursor: not-allowed;
}

#header {
    background-color: rgb(208, 208, 208);
    margin: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
}

#profile-picture {
    height: 250px;
    width: 250px;
    border-radius: 50%;
    border: 2px solid black;
    margin: 2em 0;
}

.header {
    font-size: 3em;
}

.paragraph {
    font-size: 2.5em;
}

.sub-paragraph {
    font-size: 1.5em;
}

.name {
    font-size: 5em;
    text-align: center;
}

.agenda {
    display: flex;
    margin: 0 0 3em;
}

.agenda > p {
    margin: 0 4em;
}

.input-field.valid {
    border: 2px solid green;
}

.input-field.invalid {
    border: 2px solid red;
}

.flash-message {
    color: #fff;
    padding: 10px;
    margin-bottom: 10px;
    border-radius: 5px;
    display: none; /* Initially hidden */
}

.flash-message.success {
    background-color: #4CAF50; /* Green */
}

.flash-message.error {
    background-color: #f44336; /* Red */
}