*{
    margin: 0;
    padding: 0;
    font-family: Arial, Helvetica, sans-serif;
    box-sizing: border-box;
}
.container{
    background-color: #e1e0e0;
    max-width: 600px;
    border-radius: 10px;
    margin: 0 auto;
    padding: 30px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.08);
    font-size: 20px;
}
input[type="text"],select,input[type=number],
input[type=submit]{
    padding: 15px;
    width: 100%;
    margin-bottom: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-size: 17px;
}
input[type=submit]{
    background-color: #4caf5d;
    color: white;
    border: none;
    cursor: pointer;
}
input[type=submit]:hover{
    background-color: #449f53;
}
h3{
    margin: 10px;
    font-size: 20px;
}
table{
    width: 100%;
    border-collapse: collapse;
}
th,td{
    border: 1px solid #ccc;
    padding: 8px;
    text-align: center;
}
th{
    background-color:#4caf5d;
    color: #ffff;
    font-size: 17px;
}