style.css

*
{
    padding: 0;
    box-sizing: border-box;
    font-family: Georgia, 'Times New Roman', Times, serif;
}
#graph
{
    border: 2px solid black;
}

.container
{
    display: flex;
    justify-content: space-around;
}
div.navbar
{
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    height: 80vh;
    margin-right: 50px;
}
.form-group
{
    font-size: 24px;
    width: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-around;
}
.functions
{
    display: flex;
    justify-content: space-around;
    margin: 10px;
}
.functions>button
{
    padding: 15px;
}
#algebra,#algbBtn,#trigo,#trigoBtn
{
    margin: 10px 0;
    padding: 15px;
}
button
{
    border: 1px solid black;
    border-radius: 8px;
    outline:none;
    background-color: #c4e8f7;
    font-size: 15px;
    font-weight: bold;
    cursor: pointer;
}
h1,h2
{
    text-align:center;
    margin: 0;
}