body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: #f4f4f4;
    color: #333;
    overflow: hidden;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    background: #fff;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 10;
}

.read-button {
    padding: 10px 20px;
    background-color: #0f2fd2;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.3s;
    width: 100px;
}

.read-button:hover {
    background-color: #0519ad;
}
.get-key {
    padding: 10px 20px;
    background-color: #33d1ce;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.3s;
    width: 20px;
    background-image: url('key.png');
    background-size: contain; 
    background-repeat: no-repeat; */
    background-position: center;  
}

.get-key:hover {
    background-color: #39aac0;
}

.blocks-container {
    display: flex;
    justify-content: center; /* Center the blocks */
    align-items: center; /* Vertically center the blocks */
    flex-grow: 1;
}

.block {
    width: 100px;
    height: 100px;
    margin: 0 10px;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    font-weight: bold;
    color: white;
    user-select: none;
    transition: transform 0.3s, box-shadow 0.3s;
    border-radius: 25px;

}

.block:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.canvas {
    position: absolute;
    top: 140px; /* Adjust based on header height */
    left: 0;
    right: 0;
    bottom: 0;
    border: 2px dashed #ccc;
    overflow: hidden;
    background: #fff;
}

.session {
    padding: 10px;
    margin: 10px;
    border-radius: 5px;
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: absolute;
}

form {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 20px;
    position: fixed;
    bottom: 20px;
    width: 100%;
    background: rgba(255, 255, 255, 0.8);
    padding: 20px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

input,
select,
button {
    padding: 10px;
    margin: 10px 0;
    width: 80%;
    box-sizing: border-box;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}