style.css

body{
    background-color: #FF9A8B;
    background-image: linear-gradient(90deg, #FF9A8B 0%, #FF6A88 55%, #FF99AC 100%);
    font-family: monospace;
    text-align: center;
    align-items: center;

    border: none;
}    

footer{
    font-family: monospace;
    text-align: center;
    align-items: center;
    padding: 7px;
    margin: 7px;
}
header{
    padding: 15px;
    font-family: monospace;
}
#param-selector{
    padding: 8px;
}

#angular-momentum-formula-selector, #angular-momentum-field, #bohrs-rad-formula, #velocity-formula-selector, #velocity-field{
    font-size: large;
    background-color: #3d2648;
    padding: 7px;
    margin: 7px;
    color: aliceblue;
    border-radius: 6px;
    border: solid;
    border-width: thick;
    border-color: whitesmoke;

}
#angular-momentum-btn, #bohrs-rad-btn, #velocity-btn{
    font-family: monospace;

    size: 30px;
    border: thin;
    border-color: thistle;
    border-radius: 6px;
    cursor: pointer;
    margin-left: 6px;
    margin-right: 6px;

    background-color: #563a64; /* Green */
    color: white;
    padding: 15px 32px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
}

.form-submit-btn{

    font-family: Arial;
    size: 30px;
    border: none;
    border-radius: 20px;
    cursor: pointer;
    margin-left: 6px;
    margin-right: 6px;
    margin-top: 7px;

    background-color: white;
    color: rgb(45, 23, 91);
    padding: 15px 32px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;

    text-align: center;
    align-items: center;
}

#bohrs-rad-field{
    padding-top: 10px;
    font-size: large;
    background-color: #3d2648;
    padding: 7px;
    margin: 7px;
    color: aliceblue;
    border-radius: 6px;
    border: solid;
    border-width: thick;
    border-color: whitesmoke;
}

#code-link{
    background-color: rgb(25, 66, 67);
    border: gray;
    color: whitesmoke;
    padding: 7px;
    border: thin;
    border-radius: 6px;
    text-decoration: none;
    margin: 7px;
}