body {
    background-image: url('bg.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: #fff;
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 0;
    opacity:1;
}

form {
    max-width: 600px;
    margin: 50px auto;
    padding: 50px;
    border:8px solid #000000;
    border-radius: 10px;
    background-color: #b02b2b; /*brgba(176, 43, 43, 0.3) #b02b2b renk, 0.3 opacity */
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
}

label {
    display: block;
    margin-bottom: 8px;
}

input,
select,
textarea {
    width: 96%;
    padding: 8px;
    margin-bottom: 16px;
    border: 3px solid #62833C;
    border-radius: 20px;
    background-color: #fff;
    color: #000;
}

select {
    cursor: pointer;
    width:100%;
}

input[type="checkbox"] {
   margin-right:5px;
   width:14px;
   height:14px;
   
}

input[type="submit"] {
    background-color: #27AB2A; 
    color: #fff;
    cursor: pointer;
    padding: 10px;
    border: none;
    border-radius: 5px;
}

input[type="submit"]:disabled {
    background-color: #999;
    cursor: not-allowed;
}