main.css

body {
    background-color: #21007F;
    font-family: 'Josefin Sans', sans-serif;
    color: white;
}

#content {
    margin: 0 auto;
    width: 1360px;
}

canvas {
    border: 2px solid white;
    border-radius: 20px;
    background-color: black;
    cursor: pointer;
    margin-right: 25px;
    float: left;
}

fieldset {
    border: 2px solid white;
    border-radius: 20px;
    margin-bottom: 10px;
    width: 500px;
}

fieldset legend {
    font-size: 20px;
}

fieldset label {
    line-height: 50px;
    font-size: 25px;
}

fieldset label input, fieldset label select {
    background-color: transparent;
    color: white;
    border: solid 2px white;
    border-radius: 20px;
    font-size: 25px;
    width: 150px;
    text-align: center;
    float: right;
}

#config-div {
    height: 800px;
}


#wtf{
    display: flex;
    vertical-align: bottom;
    margin-top: 18%;
}

a, a:hover, a:visited {
    color: white;
}

@media only screen and (max-width: 1350px) {

    #content {
        width: 800px;
        max-width: calc(100vw - 19px);
    }

    fieldset {
        width: 775px;
        max-width: calc(100vw - 45px);
    }

    canvas {
        width: 800px;
        max-width: calc(100vw - 19px);
        float: none;
        margin: 0 auto;
        width: 800px;
    }    
}

@media only screen and (max-width: 460px) {
    fieldset label {
        font-size: 15px;
    }

    fieldset legend {
        font-size: 10px;
    }

    fieldset label input, fieldset label select {
        font-size: 15px;
        width: 75px 
    }
}