body {
    display: flex;
    justify-content: center;       
    align-items: center;           
    min-height: 100vh;              
    flex-direction: column;
    font-family: "JetBrains Mono", monospace;
    margin: 0;
    text-align: center;
}

#content {
    width: 500px;
    padding: 20px;
}

#head {
    margin-bottom: 20px;
}

.container {
    display: flex;
    justify-content: space-around;
    margin-bottom: 20px;
}

h1 {
    font-weight: 500;
    margin: 0 0 10px 0;
}

h3 {
    color: #777;
    font-weight: 400;
    margin-bottom: 7px;
    font-size: 15px;
}

h2 {
    background: #2a2a2a;
    color: #fafafa;
    padding: 25px;
    width: 60px;
    border-radius: 0px;
    margin: 0 auto 15px;
    font-weight: 400;
    font-size: 40px;
}

button {
    color: #fafafa;
    background-color: #333;
    padding: 8px 18px;
    border: none;
    font-family: "JetBrains Mono", monospace;
    font-size: 14px;
    cursor: pointer;
    margin: 3px;
    transition: background 0.2s ease;
}

button:hover {
    background-color: #444;
}

.btn-group {
    display: flex;
    justify-content: center;
}

#botbtn {
    justify-content: center;
    gap: 20px;
}

#history {
    color: #777;
    font-size: 14px;
    line-height: 1.6;
    margin-top: 15px;
}

#history strong {
    color: #666;
}

.muted {
    color: #aaa;
}

#footer {
    position: fixed;
    bottom: 10px;
    right: 10px;
    font-size: 14px;
    background: transparent;
    white-space: nowrap;
}

.designer {
    color: #777;
    margin-right: 4px;
}

#link {
    color: #999;
    text-decoration: none;
}

#link:hover {
    text-decoration: underline;
}