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HTML

              
                <div class="container">
        <div class="select-record">
           <img src="https://i.ibb.co/Nnf216Z/btn-header.png"/></a>
  <span class="cta">click to randomize</span>
        </div> 
      <div id="recordinsert">
        <!--DIV INSERT FROM JS-->
      </div>
    </div>  

    <input type="checkbox" name="toggle" id="toggle" />
    <label for="toggle"></label>
    <div class="dropdown">

        <div class="dropdown-content">
          <div class="row genre-head" id="musictype">
            <div class="col span-2-of-2 genres">
              <ul class="settings">
                <li>
                  <select name="num-records" id="num-records">
                    <option value="1">1 Record</option>
                    <option value="2">2 Records</option>
                    <option value="3" selected>3 Records</option>
                    <option value="4">4 Records</option>
                    <option value="5">5 Records</option>
                  </select>
                </li>
                <li>
                  <input id="chkAll" type="checkbox" checked/>
                  <label for="chkAll"></label>
                </li>
               
              </ul>
            </div>
            
            <div class="row genre-options">
              <div class="col span-1-of-2 genres">
                <ul>
                  <li>
                    <input id="chkProg" class="gchk" type="checkbox" name="genre" value="4" checked/>
                    <label for="chkProg">Prog</label>
                  </li>
                  <li>
                    <input id="chk70" class="gchk" type="checkbox" name="genre" value="6" checked/>
                    <label for="chk70">70's</label>
                  </li>
                  <li>
                    <input id="chk60" class="gchk" type="checkbox" name="genre" value="7" checked/>
                    <label for="chk60">60's</label>
                  </li>
                  <li>
                    <input id="chkElectro" class="gchk" type="checkbox" name="genre" value="8" checked/>
                    <label for="chkElectro">Electro</label>
                  </li>
                  <li>
                    <input id="chkHipster" class="gchk" type="checkbox" name="genre" value="9" checked/>
                    <label for="chkHipster">Alternative</label>
                  </li>
                  <li>
                    <input id="chkMetal" class="gchk" type="checkbox" name="genre" value="10" checked/>
                    <label for="chkMetal">Metal</label>
                  </li>
                </ul>
              </div>
          

              <div class="col span-1-of-2 genres">
                <ul>
                  <li>
                    <input id="chkRap" class="gchk" type="checkbox" name="genre" value="1" checked/>
                    <label for="chkRap">Rap</label>
                  </li>
                  <li>
                    <input id="chkRB" class="gchk" type="checkbox" name="genre" value="2" checked/>
                    <label for="chkRB">R & B</label>
                  </li>
                  <li>
                    <input id="chkFunk"  class="gchk" type="checkbox" name="genre" value="3" checked/>
                    <label for="chkFunk">Funk</label>
                  </li>
                  <li>
                    <input id="chkReggae"  class="gchk" type="checkbox" name="genre" value="11" checked/>
                    <label for="chkReggae">Reggae</label>
                  </li>
                  <li>
                    <input id="chkPop" class="gchk" type="checkbox" name="genre" value="5" checked />
                    <label for="chkPop">Pop</label>
                  </li>
                  <li>
                    <input id="chkMisc" class="gchk" type="checkbox" name="genre"  value="12" checked/>
                    <label for="chkMisc">Misc</label>
                  </li>
                </ul>
              </div>
            </div>
              
            
!

CSS

              
                /* -------------------------------- */
/*   BASIC SETUP   */
/* -------------------------------- */

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

html {
  color: #fff;
  font-family: "helvetica", "Arial", sans-serif;
  font-size: 20px;
  text-rendering: optimizeLegibility;
}

body {
  background-color: #666666;
  height: 100vh;
  display: flex;
  overflow: hidden;
}

h2 {
  font-size: 100%;
  font-weight: 400;
  margin-bottom: 4px;
  color: white;
}

h3 {
  font-size: 70%;
  font-weight: 100;
  text-transform: uppercase;
  color: #ccc;
  letter-spacing: 1px;
}

.cta{
  font-size:12px;
  text-transform:uppercase;
  display:flex;
  justify-content:center;
  opacity:.5; 
}

/* -------------------------------- */
/*    Top   */
/* -------------------------------- */

.container {
 width: 85%;
 margin: auto; 
 cursor:pointer;
 transition: all 150ms ease;
}

@media only screen and (max-width: 600px) {
   .container{ 
     margin:53% auto;}
  }


.select-record img {
  display: block;
  width: 100%;
  max-width: 400px;
  margin-bottom: 16px;
  margin-left: auto;
  margin-right: auto;
}

/* -------------------------------- */
/*   RECORD DISPLAY   */
/* -------------------------------- */
.random-record {
  padding: 16px 16px;
  width: 100%;
  max-width: 400px;
  border-bottom: 1px solid #ccc;
  text-align: center;
  transition: all 500ms ease;
}

.random-record:first-child {
  padding-top: 0;
}

.random-record:last-child {
  border-bottom: 0px solid #ccc;
}

#recordinsert {
  position: absolute;
  width:85%;
  max-width: 400px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -55%);
  animation: fadeIn 1.75s ease-out;
  -webkit-animation: fadeIn 1.75s ease-out;
  
}

/* -------------------------------- */
/*    Animations   */
/* -------------------------------- */

@keyframes fadeIn {
  0% {
    opacity: 0;
  }

  60% {
    opacity: 0;
  }

  100% {
    opacity: 1;
  }
}
/* -------------------------------- */
/*    FILTER   */
/* -------------------------------- */

label {
  padding: 32px 0;
}

.genre-head {
  padding: 16px;
}

.settings {
  padding-bottom: 16px;
  border-bottom: 1px solid #ccc;
}

li {
  list-style: none;
  padding: 16px 0;
  text-shadow: 3px 2px 2px rgba(0, 0, 0, 0.5);
}

select {
  width: 100%;
  max-width: 400px;
}

/* -------------------------------- */
/*    dropdown   */
/* -------------------------------- */

.dropdown {
  background: rgba(52, 52, 52, 0.95);
  color: #fff;
  position: absolute;
  top: 100%;
  left: 0;
  height: 100%;
  width: 100%;
  padding: 0 16px;
  transition: top 300ms cubic-bezier(0.17, 0.04, 0.03, 0.94);
  overflow: hidden;
  box-sizing: border-box;
}

#toggle {
  position: absolute;
  appearance: none;
  cursor: pointer;
  left: -100%;
  top: -100%;
}

#toggle + label {
  position: absolute;
  bottom: 0; 
  cursor: pointer;
  background: #26ae90;
  width:100%;
  padding: 8px 10px;
  color: #fff;
  line-height: 20px;
  font-size: 12px;
  text-align: center;
  -webkit-font-smoothing: antialiased;
  cursor: pointer;
  transition: all 500ms ease;
  z-index: 1;
  margin-left: 0;
  padding:16px 0;
  font-size: 100%;
}

 @media only screen and (max-width: 600px) {
   #toggle + label{ 
     padding: 16px 0 88px 0;}
  }

#toggle + label:after {
  content: "Filter";
}

#toggle:checked ~ .dropdown {
  top: 0%;
}

#toggle:checked + label {
  background: #dd6149;
}

#toggle:checked + label:after {
  content: "Close";
}

#chkAll {
  position: absolute;
  appearance: none;
  cursor: pointer;
  left: -100%;
  top: -100%;
}

#chkAll:checked + label:after {
  content: "Remove All Genre";
}

#chkAll + label:after {
  content: "Add All Genre";
}

.gchk:checked + label {
  opacity: 1;
}

.gchk + label {
  opacity: 0.25;
}

.gchk {
  position: absolute;
  appearance: none;
  cursor: pointer;
  left: -100%;
  top: -100%;
}

/* -------------------------------- */
/*    Grid   */
/* -------------------------------- */

.row {
  zoom: 1; /* For IE 6/7 (trigger hasLayout) */
}

.row:before,
.row:after {
  content: "";
  display: table;
}
.row:after {
  clear: both;
}

/*  GRID COLUMN SETUP   ==================================================================== */

.col {
  display: block;
  float: left;
  margin: 1% 0 1% 1.6%;
}

.col:first-child {
  margin-left: 0;
} /* all browsers except IE6 and lower */

/*  GRID OF TWO   ============================================================================= */

.span-2-of-2 {
  width: 100%;
}

.span-1-of-2 {
  width: 49.2%;
}

              
            
!

JS

              
                const allArr = []; //Not Sure how to work around this
const rapArr = [
  "50 Cent || In Da Club",
  "Beastie Boys || Pauls Boutique",
  "B.G. || Bling Bling",
  "Juvenile || I Got That Fire",
  "Hot Boys || I Need A Hot Girl",
  "Hot Boys || Let Em Burn",
  "Big Tymers || How You Luv That ? Vol. 2",
  "Lil Wayne || Respect Us",
  "Lil Wayne || Get Off The Corner",
  "Lil Wayne || 500 Degreez",
  "Chamillionaire || Ridin / Southern Takeover",
  "City High || What Would You Do?",
  "Dead Prez || Its Bigger Than Hip-Hop",
  "Deltron 3030 || Deltron 3030",
  "Dizzee Rascal || Boy In Da Corner",
  "Dr. Dre || The Chronic",
   "Duice || Dazzey Duks",
  "Goodie Mob || World Party",
  "Grandmaster Flash || White Lines",
  "Grandmaster Flash || Volume 22",
  "Heavy D. & The Boyz || Now That We Found Love",
  "Ice Cube || It Was A Good Day",
  "Jay-Z || The Black Album",
  "Mike Jones || Sampler",
  "LL Cool J || Radio",
  "Ludacris || Whats Your Fantasy",
  "M.O.P. || 10 Years And Gunnin",
  "Naughty By Nature || Hip Hop Hooray",
  "OutKast || Aquemini",
  "Paul Wall || Sittin' Sidewayz",
  "P.M. Dawn || Set Adrift On Memory Bliss",
  "Rob Base & DJ E-Z Rock || It Takes Two",
  "Poison Clan || Shake Whatcha Mama Gave Ya'",
  "Salt 'N' Pepa || Tramp (Remix) / Push It",
  "Three 6 Mafia || Tear Da Club Up 97",
  "Three 6 Mafia || Who Run It",
  "T.I. || Urban Legend",
  "Trick Daddy || In Da Wind",
  "Warren G || This DJ",
  "World Class Wreckin Cru || The Fly / He's Bionic",
  "Ying Yang Twins || Badd",
];
const rbArr = [
  "Amy Winehouse || Back to Black",
  "The Chamber Brothers || Peace, Love and Understanding",
  "Soul Train || Hits That Made It Happen",
  "Archie Bell & The Drells || I Cant Stop Dancing",
  "En Vogue || My Lovin (Never Gonna Get It)",
  "Boyz II Men || Motownphilly",
  "Billy Preston || Music Is My Life",
  "Billy Preston || The Most Exciting Organ Ever",
  "Billy Preston || The Kids & Me",
  "Billy Preston || Billy Preston",
  "Bill Withers || The Best Of Bill Withers",
  "Bill Withers || Making Music",
  "Bill Withers || Still Bill",
  "Stevie Wonder || Innervision",
  "Michael McDonald || If Thats what it takes",
  "Ray Charles || Friendship",
  "Color Me Badd || I Wanna Sex You Up",
];
const funkArr = [
  "Cameo || Word Up!",
  "Curtis Mayfield || Superfly",
  "George Clinton || Computer Games",
  "Funkadelic || The Electric Spanking Of War Babies",
  "Funkadelic || Free Your Mind And Your Ass Will Follow",
  "James Brown || Everybody's Doin' The Hustle",
  "James Brown || Hot Pants",
  "Johnny Jenkins || Ton-Ton Macoute!",
  "Kool & The Gang || Wild And Peaceful",
  "Parliament || Chocolate City",
  "Prince || Purple Rain",
  "Prince || Dirty Mind",
  "Prince || Controversy",
  "Prince || Prince",
  "Rick James || Street Songs",
  "Shotgun || Shotgun",
  "Sly & The Family Stone || Greatest Hits",
  "Sly & The Family Stone || There's A Riot Goin' On",
  "Sly And The Family Stone || Stand!",
  "The Time || Ice Cream Castle",
];
const progArr = [
  // "Yes || The Yes Album",
  "Dire Straits || Communiqué",
  "Dire Straits || Dire Straits",
  "Dire Straits || Brothers In Arms",
  "Mike Oldfield || Tubular Bells",
  "ELO || Out Of The Blue",
  "ELO || Greatest Hits",
  "ELO || A New World Record",
  "ELO || On The Third Day",
  "ELO || Face The Music",
  // "Kansas || Leftoverture",
  "Steely Dan || Pretzel Logic",
  "Steely Dan || Aja",
  "Steely Dan || Gaucho",
  "Steely Dan || The Royal Scam",
  "Steely Dan - Katy Lied",
  "Steely Dan || Greatest Hits",
];
const rock60Arr = [
  "The Animals || Best Of The Animals",
  "The Band || Cahoots",
  "The Beach Boys || Pet Sounds",
  "The Creation - In Stereo",
  // "The Beach Boys - Surfin' Safari",
  // "Cream || Heavy Cream",
  // "Cream || Wheels of Fire",
  "Bob Dylan || Highway 61 Revisited",
  "Bob Dylan || Greatest Hits",
  "The Doors || 13",
  "The Doors || Waiting For The Sun",
  "The Doors || Absolutely Live",
  "The Grassroots || Let's Live For Today",
  "The Jimi Hendrix Experience || Smash Hits",
  "The Kinks || Greatest Hits",
  "Led Zeppelin || Houses Of The Holy",
  "Led Zeppelin || Zoso",
  "The Rolling Stones || Hot Rocks 1964—1971",
  "Santana || Abraxas",
  "Small Faces || First Step",
  "Strawberry Alarm Clock || Incense And Peppermints",
  "Tommy James And The Shondells || Mony Mony",
  "Tommy James & The Shondells || The Best Of",
  "Vanilla Fudge || Vanilla Fudge",
  "The Zombies || Time Of The Zombies",
];
const rock70Arr = [
  "Billy Squier || The Tale Of The Tape",
  "CCR || The Best Of",
  "Elvin Bishop || Let It Flow",
  "Fleetwood Mac || Rumours",
  "Fleetwood Mac || Fleetwood Mac",
  // "Fleetwood Mac || Mirage",
  "Gold Earring || Moontan",
  "Heart || Barracuda",
  "Jefferson Starship || Spitfire",
  "Jefferson Starship || Freedom At Point Zero",
  "Philip Lewin || Am I Really Here All Alone?",
  "Little Feat || Down On The Farm",
  "Little Feat || Feats Dont Fail Me Now",
  "Montrose || Paper Money",
  "Van Morrison || Moondance",
  "Nilsson || Nilsson Schmilsson",
  "Nilsson || The Point!",
  "Nilsson || Son of Schmilsson",
  "Nilsson || Pussy Cats",
  "Bob Segar || Night Moves",
  "Ted Nugent || Live",
  "Van Morrison || It's Too Late To Stop Now",
  "Van Morrison || Moondance",
  "ZZ Top || Fandango!",
  "ZZ Top || The Best Of ZZ Top",
  "ZZ Top || Eliminator",
  "ZZ Top || Tres Hombres",
];
const reggaeArr = [
  "Dance Hall || Strictly The Best 5",
  "Kevin Lyttle || Kevin Lyttle",
  "Harder They Come || Various",
  "Party Rockers Vol1 || Murder She Wrote",
  "Wayne Smith || Under Me Sleng Teng",
  "Studio One || Full Up",
  "The Upsetters || Return Of The Super Ape",
];
const electroArr = [
  "10cc || I'm Not in Love",
  "Timex Social Club || Rumors",
  "Cerrone 3 || SuperNature",
  "C&C Music Factory || Gonna Make You Sweat",
  "The Chemical Brothers || Exit Planet Dust",
  "Deee-Lite || World Clique",
  "Donna Summer || I Remember Yesterday",
  "The Faint || Danse Macbre",
  "Gary Numan || Pleasure Principle",
  "Giorgio Moroder || Midnight Express",
  "Giorgio Moroder || American Giglo",
  "Giorgio Moroder || Knights in White Satin",
  "Giorgio Moroder || From Here to Eternity",
  "Fischerspooner || Emerge",
  "Herbie Hancock || Future Shock",
  "The Human League || Dare",
  "The KLF || 3 A.M. Eternal",
  "Kraftwerk - Die Mensch·Maschine",
  "Miami Vice II || Soundtrack",
  "Mr. Oizo || Flat Beat",
  "Soft Cell || Tainted Love",
  "Soul Sonic Force || Looking for the Perfect Beat",
  "Soul Sonic Force || Planet Rock",
  "Stereo MC's || Connected",
  "Strafe / B.O.S.E. || Set It Off / Rock The World",
];
const altArr = [
  "A.R.E. Weapons || A.R.E. Weapons",
  "Adam And The Ants || Kings Of The Wild Frontier",
  "The B-52s || Rock Lobster",
  "The B-52's || Wild Planet",
  "Big Audio Dynamite || Tighten Up Vol. 88",
  "Big Audio Dynamite || Megatop Phoenix",
  "Big Audio Dynamite || No. 10, Upping St.",
  "Big Audio Dynamite || This Is Big Audio Dynamite",
  "Blondie || Parallel Lines",
  // "Blondie || AutoAmerican",
  "Blondie || The Best Of Blondie",
  "Dandy Warhols || Dandy Warhols Come Down",
  "Death || ...For the Whole World to See",
  "Devo || Are We Not Men? We Are Devo!",
  "Elvis Costello || Get Happy!!",
  "Elvis Costello || Blood & Chocolate",
  "Elvis Costello || This Years Model",
  "Elvis Costello || Armed Forces",
  "Elvis Costello || Trust",
  "EMF || Schubert Dip",
  "ESG || South Bronx Story",
  // "Fannypack || So Stylistic",
  "Iggy Pop || Lust For Life",
  "Japanther || Leather Wings",
  "Lou Reed || The Best Of",
  "The MC5 || Back in the USA",
  "Tom Petty & The Heartbreakers || Self Titled",
  "The Postal Service || Give Up",
  "Rage Against The Machine || Rage Against The Machine",
  "Ramones || Ramones Mania",
  "Repo Man || Soundtrack",
  "Scab || Sixth & New York",
  "The Streets || Original Pirate Material",
  "The Streets || A Grand Don't Come for Free",
  "Supergrass || I Should Coco",
  "Talking Heads || Speaking In Tongues",
  "Traveling Wilburys || Volume One",
  "Weezer || Weezer",
  "White Stripes || White Stripes",
  "White Stripes || De Stijl",
];
const metalArr = [
  "Black Sabbath || Master Of Reality",
  "Black Sabbath || Paranoid",
  "David Lee Roth || California Girls",
  "Deep Purple || Burn",
  "Deep Purple || Fireball",
  "Deep Purple || Who Do We Think We Are",
  "Deep Purple || Shades Of Deep Purple",
  "Deep Purple || Deep Purple",
  "Deep Purple || Made In Japan",
  "Deep Purple || Machine Head",
  "Faith No More || We Care A Lot",
  "Geezer || Psychoriffadelia",
  "Guns N Roses || Appetite For Destruction",
  "Iron Butterfly || In-A-Gadda-Da-Vida",
  "Megadeth || Peace Sells... But Whos Buying?",
  "Metallica || and Justice for All",
  "Metallica || Kill em All",
  "Metallica || Master of Puppets",
  "Metallica || Ride the Lightning",
  "Motörhead - Ace Of Spades",
  "Poison || Open Up And Say ...Ahh!",
  "Quiet Riot || Metal Health",
  "Ratt || Out Of The Cellar",
  "Saxon || The Eagle has Landed",
  "Spinal Tap || Smell the Glove",
  "Van Halen || Van Halen",
  "Van Halen || 1984",
  "White Zombie || La Sexorcisto: Devil Music Vol. 1",
];
const miscArr = [
  "Jerry Jeff Walker || Navajo Rug",
  "Françoise Hardy || Françoise Hardy",
  "Glen Campbell || Greatest Hits",
  "Los Teen Agers || 18 Exitos",
  "George Gershwin || Rhapsody in Blue Porgy & Bess",
  "Kenny Rogers || Greatest Hits",
  "Slyvia || Slyvia",
  "Dwight Yoakam || Just Lookin' For A Hit",
  "Roy Orbison || Greatest Hits",
  "George Jones || The Best Of George Jones",
  "John Prine || In Spite Of Ourselves ",
  "Overloaded Diesel || Overloaded Diesel",
  "Merle Haggard || Mama Tried",
  "Najwa Fouad || ليالي المولد = Layali El Mawled",
  "Classic Country Music || 1920s (1)",
  "Classic Country Music || 1930s SouthEast (2)",
  "Classic Country Music || 1930s Southwest (3)",
  "Classic Country Music || 1941-1953 (4)",
  "Classic Country Music || 1941-1953 (5)",
  "Classic Country Music || 1953-1963 (6)",
  "Classic Country Music || Bluegrass (7)",
  "Classic Country Music || 1963-1965 (8)",
  "Goran Bregovic || Underground",
  "Fadoul || Al Zman Saib",
  "Omar Souleyman || Wenu Wenu",
  "Randy Travis || Always & Forever",
  "Willie Nelson || Shotgun Willie"
  
];
const popArr = [
  "ABBA || The Singles",
  "ABBA || Super Trouper",
  "Ace Of Base || The Sign",
  "Bryan Adams || Reckless",
  "Bon Jovi || Slippery When Wet",
  "The Cars || Candy-O",
  "Phil Collins || Face Value",
  "Phil Collins || No Jacket Required",
  "Neil Diamond || Tap Root Manuscript",
  "Neil Diamond || Stones",
  "Neil Diamond || The Jazz Singer",
  "Neil diamond || Live at the Greek",
  "Neil Diamond || September Morn",
  "Neil Diamond || Hot August Night",
  "Neil Diamond || Rainbow",
  "Go-Go's || Beauty And The Beat",
  "Hall & Oates || Rock N Soul Part 1",
  "Don Henley || Building The Perfect Beast",
  "Huey Lewis & The News || Sports",
  "Michael Jackson || Off The Wall",
  "Michael Jackson || Thriller",
  "Elton John || Greatest Hits",
  "Madness || Madness",
  "John Cougar Mellencamp || American Fool",
  "Elvis Presley || On Stage - February, 1970",
  "Pretty in Pink || OST",
  "Sade || Diamond Life",
  "Santa Esmarelda || Don't Let Me Be Misunderstood",
  "Paul Simon || Graceland",
  "Saturday Night Fever || Soundtrack",
  "Paul Simon || Graceland",
  "Wham! || Make it Big",
];

//Array of arrays
const genreArr = [
  allArr,
  progArr,
  rock70Arr,
  rock60Arr,
  electroArr,
  altArr,
  metalArr,
  rapArr,
  rbArr,
  funkArr,
  reggaeArr,
  popArr,
  miscArr,
];

const containerDiv = document.querySelector(".container");
const cta = document.querySelector(".cta");

//Array of selected genre Arrays
let selected = [];

//Check/uncheck all boxes
document.getElementById("chkAll").onclick = function () {
  const checkboxes = document.getElementsByName("genre");
  for (const checkbox of checkboxes) {
    checkbox.checked = this.checked;
  }
};

containerDiv.addEventListener("click", function () {
  //Clears Array
  selected = [];

  //Move IMG
  containerDiv.style.marginTop = "32px";
  cta.style.opacity=0;

  // Remove previous
  const removeInsert = document.getElementById("recordinsert");
  while (removeInsert.firstChild) {
    removeInsert.removeChild(removeInsert.firstChild);
  }

  //Checks checkboxes
  const musicType = document.getElementById("musictype");
  const chks = musicType.getElementsByTagName("INPUT");

  // Loop and push the checked CheckBox value in Array.
  for (let i = 1; i < chks.length; i++) {
    if (chks[i].checked) {
      selected = selected.concat(genreArr[i]);
      // selected = [...selected, ...genreArr[i]];
    }
  }

  //Number of albums from selector
  const numRecords = document.getElementById("num-records").value;

  //Inserts selections in to HTML
  for (let i = 0; i < numRecords; i++) {
    const randomNumber = Math.trunc(Math.random() * selected.length);
    const full = selected[randomNumber].split(" || ");
    const band = full[0];
    const album = full[full.length - 1];
    document
      .getElementById("recordinsert")
      .insertAdjacentHTML(
        "afterbegin",
        `<div class="row random-record"><h2>${album}</h2><h3>${band}</h3></div>`
      );
  }
});


              
            
!
999px

Console