style.css

:root{
    --defcolor: rgba(40, 231, 190, 1);
    --backcolor: black;
    --immcolor : rgba(40, 231, 190, 1);
}
html{
    background: var(--defcolor);
    transition: 1s;
}

body{
    font-family: 'Patrick Hand', cursive;
    border: 5px solid var(--defcolor);
    transition: 1s;
    position: relative;
    height: 99vh;
    width: 99.3vw;
    margin:0px;
    z-index: 1;
    scrollbar-width: 0px;
    overflow-x: hidden;
    overflow-y: hidden;
}

#header{
    position: absolute;
    background: var(--defcolor);
    min-width: 50px;
    min-height: 30px;
    z-index: 1;
    top: 0;
    left: 0;
    padding: 10px;
    border-bottom-right-radius: 0.5rem;
    font-family: 'Patrick Hand', cursive;
    font-size: 1.5em;
    transition: 1s;
}

#header:hover{
    cursor: pointer;
    background: var(--backcolor);
    color: var(--defcolor);
    box-shadow: 4px 0px 5px 1px var(--defcolor),
                0px 4px 5px 1px var(--defcolor); 
    transition: 0.5s ease-in;
}

#buttons{
    position: absolute;
    z-index: 1;
    min-width: 60px;
    top: 2px;
    right: 0px;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-end;
    flex-flow: column wrap-reverse;
}

.action-button{
    background: var(--defcolor);
    min-width: 30px;
    min-height: 30px;
    width: 1.5em;
    height: 1.5em;
    padding: 2px;
    border-radius: 0.6rem;
    font-family: 'Patrick Hand', cursive;   
    font-size: 2em;
    margin: 3px 3px 10px 3px;
    border: 0px;
    transition: 0.5s ease-out;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

.action-button:hover{
    cursor: pointer;
    background: var(--backcolor);
    color: var(--defcolor);
    border:1px solid var(--backcolor);
    box-shadow: 1px 0px 5px 1px var(--defcolor), 
                -1px 0px 5px 1px var(--defcolor),
                0px 1px 5px 1px var(--defcolor), 
                0px 0px 5px 1px var(--defcolor);
    transition: 0.5s ease-out;
}

.action-button:active{
    font-size: 2.2em;
    transition: 0.3s;
}

#canvas1{
    position: absolute;
    background: var(--backcolor);
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: -1;
}

.color{
    height: 30px;
    width: 30px;
    border-radius: 1rem;
    margin: 2px;
    transition: 0.5s;
    border: 1px solid transparent;
}

.color:hover{
    cursor: pointer;
    border-radius: 0.2rem;
    box-shadow: 2px 2px var(--backcolor);
    border: 3px var(--backcolor) solid;
}

.color:active{
    height: 40px;
    transition: 0.5s;
}

#color-picker-div{
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    height: 90px;
    position: absolute;
    bottom: 2%;
    left: 50%;
    -ms-transform: translate(-50%, 0%);
    transform: translate(-50%, 0%);
    margin-bottom: 5px;
    overflow: hidden;
}

.color-picker-tab{
    min-width: 40px;
    width: 20vw;    
    /* display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: flex-start;
    flex-wrap: wrap;
    */
    flex: 1;
    background-color: transparent;
    margin: 5px;
    display: grid;
    grid-template-columns: auto auto auto auto auto;
    grid-template-rows: auto auto;
    overflow: hidden;
}


#header-tooltip{
    opacity: 0;
    color: var(--defcolor);
    background: var(--backcolor);
    position: absolute;
    top:50px;
    left:70px;
    border-radius: 0.2rem;
    transition: 0.5s ease-in;
    visibility: hidden;
}

#header:hover + #header-tooltip{
    visibility: visible;
    opacity: 1;
}

.text-wrapper{
    transition: transform 0.5s;
}

.btn-wrapper{
    flex:1;
    display: flex;
    height: 100%;
    width: 100%;
    align-items: center;
    justify-content: center;
    transition: transform 0.5s;
}

#buttons svg{
    width: 80%;
    height: 80%;
    flex: 1;
    object-fit: contain;
    transition: fill 0.5s;
}

.action-button:hover svg{
    fill: var(--defcolor);
}

#state {
    position: absolute;
    bottom: 1em;
    left: 1.5em;
    min-width: 40px;
    min-height: 40px;
    padding: 5px 5px 5px 0px;
    margin: 5px 5px 5px 0px;
    text-align: center;
    opacity: 1;
    transition: 0.5s, opacity 0.4s ease-in-out;
    display: flex;
    justify-content: flex-start;
    align-items: flex-start;
    visibility: hidden;
}

#state-wrapper{
    width: 3em;
    height: 3em;
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 2;
    border-radius: 2rem;
    padding: 5px;
    transition: 0.2s ease-in-out, background-color 0s;
    visibility: visible;
    background-color: var(--defcolor);
    border: 0px;
    box-shadow: 0px 0px 5px 1px var(--defcolor);
}

#state-wrapper:hover{
    cursor: pointer;
}

#state-wrapper:active{
    background-color: var(--backcolor);
    box-shadow: 0px 0px 5px 1px var(--backcolor);
    border: 1px solid var(--backcolor);
    transition: 0.2s ease-in-out, background-color 0.2s ease-in-out;
}

.stateLogoSvg {
    max-width: 3em;
    max-height: 3em;
    fill: black;
}

.colorpicker {
    z-index: 10;
    display: block;
    min-width: 500px;    
    margin: 5px;
    height: auto;
    background-color: transparent;
    transition: all 0.8s;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    flex: 3;
}

.picker {
    display: inherit;
}

.slider-container {
    margin-left: auto;
    margin-right: auto;
    margin-top: 2px;
    margin-bottom: 2px;
    box-sizing: border-box;
    -moz-box-sizing: border-box;
    -webkit-box-sizing: border-box;
    width: 100%;
    height: 30px;
    border-radius: 20px;
}

.slider {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    width: 100%;
    outline: none;
    margin: 0 auto;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
}

.colorpikcer > input {
    width: 100%;
}

.hue {
    background-image: linear-gradient(to right, red, orange, yellow, green, blue, indigo, violet);
    margin-left: auto;
    margin-right: auto;
    height: 30px;
    box-sizing: border-box;
    -moz-box-sizing: border-box;
    -webkit-box-sizing: border-box;
    border-radius: 5px;
}

.satcolor {
    background-color: transparent;
}

.sat {
    background-image: linear-gradient(to right, #494949 0%, transparent 100%), linear-gradient(to right, #fff 0%, transparent 0%);
    margin-left: auto;
    margin-right: auto;
    box-sizing: border-box;
    -moz-box-sizing: border-box;
    -webkit-box-sizing: border-box;
    border-radius: 1em;
    height: 10px;
}

.light {
    background-image: linear-gradient(to right, #000 0%, transparent 100%), linear-gradient(to right, #fff 0%, transparent 100%);
    margin-left: auto;
    margin-right: auto;
    box-sizing: border-box;
    -moz-box-sizing: border-box;
    -webkit-box-sizing: border-box;
    border-radius: 1em;
    height: 10px;
}

.slider-thin::-webkit-slider-thumb:hover {
    background-color: white;
    border-color: black;
}

.slider-thin::-moz-range-thumb:hover {
    background-color: white;
    border-color: black;
}

.slider-thin::-webkit-slider-thumb {
    appearance: none;
    background-color: black;
    width: 20px;
    height: 20px;
    border-radius: 1rem;
    border: 2px white solid;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
    cursor: pointer;
}

.slider-thin::-moz-range-thumb {
    appearance: none;
    background-color: transparent;
    width: 20px;
    height: 28px;
    border-radius: 3px;
    border-color: transparent;
    border-bottom: 1px black solid;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
    cursor: pointer;
}

.hue::-webkit-slider-thumb:hover {
    border: 2px rgb(151, 174, 243) solid;
    border: 2px rgba(151, 174, 243, 0.8) solid;
}

.hue::-moz-range-thumb:hover {
    border: 2px rgb(151, 174, 243) solid;
    border: 2px rgba(151, 174, 243, 0.8) solid;
}

.hue::-webkit-slider-thumb {
    appearance: none;
    background-color: transparent;
    width: 20px;
    height: 29px;
    border-radius: 3px;
    border-color: transparent;
    border-bottom: 1px black solid;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
    cursor: pointer;
}

.hue::-moz-range-thumb {
    appearance: none;
    background-color: transparent;
    width: 20px;
    height: 28px;
    border-radius: 3px;
    border-color: transparent;
    border-bottom: 1px black solid;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
    cursor: pointer;
}