* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
    font-family: Arial, sans-serif;
    max-width: 400px;
    margin: 50px auto;
    padding: 20px;
    text-align: center;
    color: #eee;
    background-color: #555555;
}
.container {
    max-height: 90vh;
    max-width: 500px;
    background-color: #000000;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 10px 20px 25px rgba(0, 0, 0, 0.567);
}
h2 {
    color: #84ff00;
    margin-bottom: 20px;
    font-size: 1.6rem;
}
h3 {
    margin-bottom: 20px;
    margin-top: 15px;
}
p {
    font-size: 1rem;
    margin-bottom: 20px;
    margin-top: 15px;
}
input,
select, 
button {
    padding: 8px;
    margin: 5px;
    width: 100%;
    margin-bottom: 10px;
    box-sizing: border-box;
    border-radius: 8px;
}
button {
    background-color: #16d81d;
    color: white;
    border: none;
    cursor: pointer;
    font-size: 16px;
    font-weight: 700;
}
button:hover {
    background-color: #0b750e;
}
button[class="clear-btn"] {
    background-color: #d81616;
}
button[class="clear-btn"]:hover {
    background-color: #730404;
}