style.css

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    user-select: none;
}

body {
    background: url('bg.jpg');
}

.container {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.crust {
    position: relative;
    display: flex;
    justify-content: center;
    align-content: center;
    width: 460px;
    height: 460px;
    border-radius: 100%;
    background: #333;
    -webkit-box-shadow: 0px 3px 11px 6px rgba(0, 0, 0, 0.53);
    -moz-box-shadow: 0px 3px 11px 6px rgba(0, 0, 0, 0.53);
    box-shadow: 0px 3px 11px 6px rgba(0, 0, 0, 0.53);
}

.core {
    align-self: center;
    display: flex;
    justify-content: center;
    align-content: center;
    flex-direction: column;
    width: 200px;
    height: 200px;
    position: absolute;
    top: 28%;
    left: 28%;
    background: #ece7ee;
    border: 15px solid #333;
    border-radius: 100%;
    /*    z-index: 8;*/
}

.mantle {
    display: flex;
    justify-content: center;
    align-content: center;
    align-items: center;
    flex-direction: column;
}

.top,
.bottom {
    align-self: center;
    display: flex;
    justify-content: space-between;
    align-content: center;
    flex-direction: row;
}

.top div,
.bottom div {
    margin: 10px;
    cursor: pointer;
    -webkit-tap-highlight-color: rgba(255, 255, 255, 0);
}

.block {
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 100px 0 100px 200px;
    border-color: transparent transparent transparent;
    border-top-left-radius: 100%;
}

.topleft {
    background: #00a74a;
}

.topright {
    background: #9f0f17;
    transform: rotate(90deg);
}

.bottomleft {
    background: #cca707;
    transform: rotate(-90deg);
}

.bottomright {
    background: #094a8f;
    transform: rotate(-180deg);
}

.topleft:active,
.gb {
    /*    transition: background 1s;*/
    background: rgba(71, 237, 144, 0.83);
}

.topright:active,
.rb {
    /*    transition: background 1s;*/
    background: rgba(255, 48, 59, 0.8);
}

.bottomleft:active,
.yb {
    /*    transition: 0.3s;*/
    background: rgb(230, 199, 66);
}

.bottomright:active,
.bb {
    /*    transition: 0.3s;*/
    background: rgba(51, 132, 216, 0.74);
}

.controls {
    align-self: center;
}

.name h1 {
    font-family: 'Play', sans-serif;
    color: #222;
    /*    letter-spacing: 2px;*/
    font-size: 30px;
    text-align: center;
}

.name sup {
    font-size: 14px;
}

.middle {
    /*    border: 1px solid red;*/
    display: flex;
    justify-content: space-between;
    align-content: center;
    flex-direction: row;
    margin-top: 5px;
    position: relative;
    font-family: 'Oswald', sans-serif;
}

.count {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-content: center;
    text-align: center;
    /*    border: 1px solid red;*/
}

.countnum {
    width: 50px;
    height: 40px;
    border: 4px solid #222;
    border-radius: 10px;
    padding: 3px 0px;
    background: #32050C;
    text-align: center;
    font-family: 'VT323', monospace;
    font-size: 20px;
    letter-spacing: 2px;
    margin-top: 3px;
}

.on {
    color: #DC0D29;
}

.off {
    color: #430710;
}

.countname,
.strictname,
.startname {
    font-size: 15px;
    text-align: center;
    color: #222;
    /*    margin-top: 5px;    */
}

.countname {
    margin-top: -3px;
}

.start,
.strict {
    padding-top: 5px;
    display: flex;
    /*    align-content: center;*/
    /*    justify-content: center;*/
    flex-direction: column;
    /*    border: 1px solid red;*/
    width: 50px;
}

.startbubble {
    align-self: center;
    width: 30px;
    height: 30px;
    border-radius: 100%;
    border: 4px solid #222;
    background: #FC0102;
    margin-top: 5px;
    box-shadow: 0px 2px 3px #222;
}

.startbubble:active,
.strictbubble:active {
    position: relative;
    box-shadow: 0 5px #666;
    top: 3px;
}

.startname {
    margin-top: -3px;
}

.strictname {
    margin-top: -3px;
}

.clickable {
    pointer-events: auto;
    cursor: pointer;
}

.unclickable {
    pointer-events: none;
    cursor: default;
}

.led-off {
    background: #32050C;
}

.led-on {
    background: #DC0D29;
}

.strictbubble {
    background: yellow;
    border-radius: 100%;
    align-self: center;
    width: 30px;
    height: 30px;
    border: 4px solid #222;
    margin: 5px 0px;
    box-shadow: 0px 2px 3px #222;
}

.led {
    width: 8px;
    height: 8px;
    text-align: center;
    margin: 0px auto;
    /*    align-self: center;*/
    border: 1px solid #222;
    border-radius: 100%;
}

.onoff {
    /*   border: 1px solid red;*/
    display: flex;
    justify-content: center;
    align-content: center;
}

.switch {
    align-self: center;
    margin: 10px 0px 0px 0px;
}

.tgl {
    display: none;
}

.tgl+.tgl-btn {
    outline: 0;
    display: block;
    width: 3em;
    height: 1.8em;
    position: relative;
    cursor: pointer;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    padding: 2px;
    -webkit-transition: all .2s ease;
    transition: all .2s ease;
    /*background: #fff;*/
    /*    background: #ece7ee;*/
    background: #333;
    border: 4px solid #333;
    border-radius: 2em;
}

.tgl+.tgl-btn:after,
.tgl+.tgl-btn:before {
    position: relative;
    display: block;
    content: "";
    width: 50%;
    height: 100%;
}

.tgl+.tgl-btn:after {
    left: 0;
    -webkit-transition: all .2s ease;
    transition: all .2s ease;
    background: red;
    content: "";
    border-radius: 1em;
}

.tgl:checked+.tgl-btn {
    border: 4px solid #333;
}

.tgl+.tgl-btn:before {
    display: none;
}

.tgl:checked+.tgl-btn:after {
    /*left: 50%;*/
    left: 50%;
    background: lime;
}

@media only screen and (max-width:600px) {
    .container {
        height: 90vh;
    }
    .crust {
        width: 360px;
        height: 360px;
    }
    .block {
        width: 0;
        height: 0;
        border-style: solid;
        border-width: 75px 0 75px 150px;
        border-color: transparent transparent transparent;
        border-top-left-radius: 100%;
    }
    .top div,
    .bottom div {
        cursor: pointer;
        -webkit-tap-highlight-color: rgba(255, 255, 255, 0);
    }
    .core {
        width: 150px;
        height: 150px;
        border: 10px solid #333;
    }
    .name h1 {
        font-size: 20px;
    }
    .name sup {
        font-size: 10px;
    }
    .count,
    .start,
    .strict {
        width: 40px;
    }
    .countnum {
        width: 40px;
        height: 30px;
        font-size: 12px;
    }
    .strictbubble,
    .startbubble {
        width: 20px;
        height: 20px;
        border: 2px solid #222;
    }
    .countname,
    .startname,
    .strictname {
        font-size: 12px;
    }
    .tgl+.tgl-btn {
        width: 2.3em;
        height: 1.5em;
        padding: 0px;
    }
    .switch {
        -webkit-tap-highlight-color: rgba(255, 255, 255, 0);
        margin: 5px 0px 0px 0px;
    }
}

@media only screen and (max-width:380px) {
    body {
        position: fixed;
        top: 0;
        bottom: 0;
        right: 0;
        left: 0;
    }
    .container {
        height: 87vh;
    }
    .crust {
        width: 300px;
        height: 300px;
    }
    .block {
        width: 0;
        height: 0;
        border-style: solid;
        border-width: 60px 0 60px 120px;
        border-color: transparent transparent transparent;
        border-top-left-radius: 100%;
    }
    .top div,
    .bottom div {
        cursor: pointer;
        -webkit-tap-highlight-color: rgba(255, 255, 255, 0);
    }
    .middle {
        margin: 0px;
    }
    .core {
        width: 130px;
        height: 130px;
        border: 7px solid #333;
    }
    .name {
        visibility: hidden;
    }
    .count,
    .start,
    .strict {
        width: 35px;
    }
    .countnum {
        width: 32px;
        height: 30px;
        border: 2px solid #222;
        font-size: 12px;
        padding: 3px 0px;
    }
    .strictbubble,
    .startbubble {
        width: 20px;
        height: 20px;
        border: 2px solid #222;
    }
    .countname,
    .startname,
    .strictname {
        font-size: 12px;
    }
    .tgl+.tgl-btn {
        width: 2.2em;
        height: 1.5em;
    }
    .switch {
        -webkit-tap-highlight-color: rgba(255, 255, 255, 0);
        padding: 0px;
        margin: 2px 0px 0px 0px;
    }
}