deploy/static/styles.css

body {
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    font-family: Arial, sans-serif;
    background: linear-gradient(to bottom, #FF66A3, #007BFF);
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-size: cover;
    background-position: center;
    color: #333;
    height: 100vh;
}

header {

    color: #fff;
    text-align: center;
    padding: 0px 0;
}

#button-container {
    text-align: center;
}

#button-container, #drawingCanvas{
    flex-direction: column;
    margin: 5px;
}

#sendDrawing, #clearCanvas {
    display: inline-block;
    margin: 10px;
    padding: 10px 20px;
    background-color: #1265e0;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
}

#sendDrawing:hover, #clearCanvas:hover {
    background-color: #023d7c;
}

#textbox-container {
    text-align: center;
    margin-top: 20px; 
}

#bigChar {
    font-size: 40px; 
    margin-bottom: 10px;
}

#number {
    font-size: 24px; 
}

#tip {
    font-size: 24px; 
}

.grid-container {
    display: flex;
    flex-direction: column; 
    align-items: center;
}

.container {
    display: flex;
    justify-content: center;
    margin-top: 100px;
}

#grid-container, #textbox-container{
    margin-left: 150px;
    margin-right: 150px;
}

.numero-container {
    width: 280px;
    height: 280px;
    background-color: #fff;
    color: #000;
    text-align: center;
    line-height: 100px;
}