* {
    margin: 0;
    padding: 0;
}

#title {
    font-size: 26px;
    font-weight: bold;
}

body {
    margin-top: 20px;
    margin-bottom: 20px;
    background: url('http://wallpapercave.com/wp/8iAP1eI.jpg');
    background-position: center;
    background-size: cover;
    background-repeat: no-repeat;
}

label {
    font-size: 16px;
}

#content {

    height: 100vh;
    width: 100vw;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

#form {
    padding: 15px;
    height: 100vh;
    max-height: 600px;
    width: 100vw;
    max-width: 400px;
    border-radius: 20px;
    box-shadow: 0 0 20px rgba(0,0,0,0.7);
    background-color: rgba(0,0,0,0.7);
    color: white;
    font-size: 18px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;  
}

.form-grid {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;  
}

.grid {
    margin: 1px;
    text-align: center;
}

.input {
    width: 200px;
    padding-left: 10px;
    border-radius: 10px;
    margin-top: 2px;
    margin-bottom: 15px;
}

.calculate-button {
    font-size: 18px;
    background: white;
    color: #000;
    padding: 5px;
    border-radius: 10px;
    cursor: pointer;
    transition: .2s ease-in-out all;
}

.calculate-button:hover {
    background: #000;
    color: white;
    box-shadow: 0 0 5px white;
}
#extra-income {
    text-align: center;
    padding: 10px;
    margin-top: 10px;
    background: #000;
    box-shadow: 0 0 10px grey;
    height: 50px;
    width: 100%;
    border-radius:20px;
    font-size: 18px;
    color: white;
}