body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    height: 100vh;
    margin: 0;
}

.container {
    background: rgb(238, 194, 194);
    padding: 20px;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    text-align: center;
}

h1 {
    margin-bottom: 20px;
}

#shape-container {
    position: relative;
    width: 100px;
    height: 100px;
    margin: 20px auto;
}

.shape {
    position: absolute;
    display: none; 
}

#circle {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background-color: blue;
}

#square {
    width: 100px;
    height: 100px;
    background-color: green;
}

#triangle {
    width: 0;
    height: 0;
    border-left: 50px solid transparent;
    border-right: 50px solid transparent;
    border-bottom: 100px solid red;
}

input {
    padding: 10px;
    margin-top: 10px;
    width: 80%;
}

button {
    padding: 10px;
    margin-top: 10px;
    cursor: pointer;
}

#timer {
    margin-top: 20px;
    font-weight: bold;
}
a {
    text-decoration: none; 
    color: red;
    transition: color 0.3s ease-in-out; 
}

a:hover {
    color: darkred;
    text-decoration: underline; 
}