style.css

body {

    margin: 0 auto;
   
    background: #241468;
    color: white;
    font-family: 'Courier New', Courier, monospace;
}


h1 {
    font-size: 50px;
    
}

.pageContent {
    display: flex;
    margin-top: 50px;
    padding: 0px 50px;
}

.optionsContainer {
    flex: 1;
}



.optionsContainer > * {
    margin: 20px;
}

.colorPickerContainer input {
    width: 100px;
    height: 50px;
}

.button {
    padding: 10px;
    width: 200px;
    margin: 20px;
    background: white;
    
    border-radius: 10px solid white; 
    font-size: 20px;
    font-weight: bold;
    font-family: 'Courier New', Courier, monospace;
  
}

.pageContent > * {
    text-align: center;
    height: 100%;
}



.header {
    background: #EA1179;
    display:flex;
    align-items: center;
    justify-content: center;
    width: 100%;
}

#gridContainer{
    width: 40vw;
    height: 40vw;
    background: purple;
    margin: 0 auto;
    margin-top: 30px;
    display: grid;
    border: 10px solid white;
}


.sliderContainer {
    left: 50%;

    margin: 0 auto;
}

#myslider {
    -webkit-appearance: none;
    width: 100%;
    height: 20px;
    border-radius: 10px;
    background: #9F0D7F;
    border: 2px solid white;
    outline: none;

    
}

/* Track */
#myslider::-webkit-slider-runnable-track {
    width: 100%;
    height: 5px;
    background: #9F0D7F;
}

/* Thumb */
#myslider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    background: white;
    border-radius: 50%;
    border: 1px solid white;
    margin-top: -8px;
}

@media only screen and (max-width: 1200px) {
    .pageContent {
        flex-direction: column;
        padding: 10px 20px;
    }
    .optionsContainer {
        width: 50%;
    }
    h1 {
        font-size: 40px;
    }
    #gridContainer {
        width: 80vw;
        height: 80vw;
    }
}