body {
  color: #333;
  font-family: "Open Sans", sans-serif;
  margin: 0;
  padding: 0;
}

main {
  margin: 40px;
}

h1 {
  font-size: 30px;
  margin-bottom: 40px;
}

.button_container {
  border: 1px solid #ddd;
  margin: 0 10px 10px 0;
  padding: 20px;
  width: 300px;
  height: 300px;
  float: left;
  overflow: hidden;
  box-sizing: border-box;
  text-align: center;
}

a#btn_spotify {
  display: inline-block;
  height: 50px;
  box-sizing: border-box;
  border-radius: 25px;
  margin: auto;
  margin-top: 100px;
  padding: 10px 40px 0 40px;
  background-color: #2ebd59;
  border: 2px solid #2ebd59;
  color: #fff;
  font-size: 20px;
  font-family: "Montserrat", sans-serif;
  font-weight: bold;
  text-decoration: none;
  transition: all 0.5s;
}

a#btn_spotify:hover {
  background-color: #fff;
  border: 2px solid #000;
  color: #000;
}

a#btn_amazon {
  display: block;
  width: 100px;
  height: 100px;
  box-sizing: border-box;
  border-radius: 50px;
  margin: auto;
  margin-top: 75px;
  padding-top: 8px;
  background-color: #232f3e;
  color: #fff;
  text-align: center;
  font-size: 60px;
  transition: all 0.2s;
}

a#btn_amazon:hover {
  background-color: #fc9a18;
}

a#btn_twitter {
  display: inline-block;
  height: 40px;
  box-sizing: border-box;
  border-radius: 4px;
  margin: auto;
  margin-top: 105px;
  padding: 10px 30px 0 30px;
  background-color: #56cdf1;
  color: #fff;
  font-size: 18px;
  font-family: "Arial", sans-serif;
  font-weight: bold;
  text-decoration: none;
}

a#btn_twitter:hover {
  /* Permalink - use to edit and share this gradient: https://colorzilla.com/gradient-editor/#2ebfec+0,28a5cb+100 */
  background: rgb(46, 191, 236); /* Old browsers */
  background: -moz-linear-gradient(
    -45deg,
    rgba(46, 191, 236, 1) 0%,
    rgba(40, 165, 203, 1) 100%
  ); /* FF3.6-15 */
  background: -webkit-linear-gradient(
    -45deg,
    rgba(46, 191, 236, 1) 0%,
    rgba(40, 165, 203, 1) 100%
  ); /* Chrome10-25,Safari5.1-6 */
  background: linear-gradient(
    135deg,
    rgba(46, 191, 236, 1) 0%,
    rgba(40, 165, 203, 1) 100%
  ); /* W3C, IE10+, FF16+, Chrome26+, Opera12+, Safari7+ */
  filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#2ebfec', endColorstr='#28a5cb',GradientType=1 ); /* IE6-9 fallback on horizontal gradient */
}

a#btn_indiegogo {
  display: inline-block;
  position: relative;
  margin: auto;
  margin-top: 100px;
  padding: 8px 16px;
  background-color: #fff;
  color: #eb1478;
  font-family: "Ubuntu", sans-serif;
  font-size: 30px;
  font-weight: bold;
  text-transform: uppercase;
  text-decoration: none;
  letter-spacing: -2px;
  transition: all 0.2s;
}

a#btn_indiegogo:before {
  content: "";
  display: block;
  width: 0;
  height: 0;
  z-index: 1;
  position: absolute;
  top: 50%;
  left: 50%;
  background-color: #eb1478;
  transition: all 0.5s;
}

a#btn_indiegogo:hover {
  color: #fff;
}

a#btn_indiegogo:hover:before {
  width: 100%;
  height: 100%;
  left: 0;
  top: 0;
}

a#btn_indiegogo span {
  position: relative;
  z-index: 10;
}

/******** Coca-Cola *********/

a#btn_cocacola {
  display: inline-block;
  margin: auto;
  margin-top: 50px;
  padding: 0px 20px;
  padding-top: 40px;
  width: 100px;
  height: 100px;
  background-color: rgb(255, 255, 255);
  color: #f40000;
  font-family: "Ubuntu", sans-serif;
  font-size: 24px;
  text-decoration: none;
  border-radius: 1000px;
  transition: all 0.5s;
}

a#btn_cocacola:hover {
  color: rgb(255, 255, 255);
  background-color: #f40000;
}

/******** Apple *********/

a#btn_apple {
  display: inline-block;
  margin: auto;
  margin-top: 100px;
  color: #000000;
  font-size: 24px;
  font-weight: 600;
  text-decoration: none;
  border-radius: 1000px;
  transition: all 0.5s;
  padding: 20px;
}

a#btn_apple i {
  transform: translateX(60px);
  transition: all 0.3s;
}

a#btn_apple:hover i {
  transform: translateX(0px);
}

a#btn_apple span {
  opacity: 0;
  transition: all 0.5s;
}

a#btn_apple:hover span {
  opacity: 1;
}

/******** IBM *********/
a#btn_ibm {
  display: inline-block;
  position: relative;
  margin: auto;
  margin-top: 100px;
  color: #0f62fe;
  border: 2px solid #0f62fe;
  background-color: #ffffff;
  font-size: 48px;
  font-weight: 800;
  text-decoration: none;
  transition: all 0.09s;
  padding: 10px 20px;
}

a#btn_ibm:before {
  content: "";
  display: block;
  width: 100%;
  height: 0;
  z-index: 1;
  position: absolute;
  top: 100%;
  left: 0;
  background-color: #0f62fe;
  transition: all 0.2s;
}

a#btn_ibm:hover {
  color: #ffffff;
}

a#btn_ibm:hover:before {
  width: 100%;
  height: 100%;
  left: 0;
  top: 0;
}

a#btn_ibm span {
  position: relative;
  z-index: 2;
}

/******** NERF *********/
a#btn_nerf {
  display: inline-block;
  position: relative;
  margin: auto;
  margin-top: 100px;
  color: #fe5000;
  background-color: #ffffff;
  font-family: "Ubuntu", sans-serif;
  font-size: 30px;
  text-decoration: none;
  transition: all 0.2s;
  padding: 10px 20px;
  transform: skewX(-10deg);
}

a#btn_nerf:before {
  content: "";
  display: block;
  width: 0;
  height: 100%;
  z-index: 1;
  position: absolute;
  top: 0;
  right: 100%;
  background-color: #000000;
  transition: all 0.2s;
}

a#btn_nerf:hover {
  color: #fe5000;
  font-size: 32px;
}

a#btn_nerf:hover:before {
  width: 100%;
  height: 100%;
  right: 0;
  top: 0;
}

a#btn_nerf span {
  position: relative;
  z-index: 2;
}

/******** Harley Davidson *********/
a#btn_harleydavidson {
  display: inline-block;
  position: relative;
  margin: auto;
  margin-top: 70px;
  color: #fa6600;
  background-color: #ffffff;
  font-family: "Noto Sans", sans-serif;
  font-size: 28px;
  font-weight: 800;
  text-decoration: none;
  text-transform: uppercase;
  border: 1px solid #fa6600;
  transition: all 0.2s;
  padding: 10px 0px;
}

a#btn_harleydavidson:hover {
  color: #000000;
  font-size: 32px;
  border: 0px;
}

/******** Lyft *********/
a#btn_lyft {
  display: inline-block;
  position: relative;
  margin: auto;
  margin-top: 100px;
  color: rgb(255, 0, 191);
  background-color: #ffffff;
  font-family: "Ubuntu", sans-serif;
  font-size: 32px;
  font-weight: 800;
  text-decoration: none;
  text-transform: lowercase;
  transition: all 0.2s;
}

a#btn_lyft span:hover {
  opacity: 0;
}

a#btn_lyft:before {
  content: "lyft";
  height: 100%;
  width: 100%;
  position: absolute;
  color: #523be4;
  left: -100%;
  opacity: 0;
  transition: all 500ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/** cubic bezier found off of: https://codepen.io/prasanthmj/pen/MmeEyB**/

a#btn_lyft:hover:before {
  left: 0;
  opacity: 1;
}

/******** Cartoon Network *********/
a#btn_cartoonnetwork {
  display: inline-block;
  position: relative;
  margin: auto;
  margin-top: 70px;
  color: #ffffff;
  font-family: "Open Sans", sans-serif;
  font-size: 28px;
  font-weight: 800;
  text-decoration: none;
  text-transform: uppercase;
  transition: all 0.3s;
  width: 200px;
  padding: 10px 0px;
}

a#btn_cartoonnetwork:hover {
  color: #000000;
  background-color: #ffffff;
}

a#btn_cartoonnetwork:before {
  content: "";
  display: block;
  width: 100%;
  height: 100%;
  z-index: 1;
  position: absolute;
  top: 0;
  left: 0;
  background-color: #000000;
  transition: all 0.3s;
  border-radius: 20px;
}

a#btn_cartoonnetwork:hover:before {
  width: 0;
  height: 0;
  left: 50%;
  top: 50%;
}

a#btn_cartoonnetwork span {
  position: relative;
  z-index: 2;
}

/******** The Tonight Show *********/
a#btn_thetonightshow {
  display: inline-block;
  position: relative;
  margin: auto;
  margin-top: 100px;
  color: #080e38;
  font-family: "Noto Sans", sans-serif;
  font-weight: 700;
  font-size: 20px;
  text-decoration: none;
  text-transform: uppercase;
  transition: all 0.2s;
  padding: 10px 10px;
  border-radius: 50px;
}

a#btn_thetonightshow:before {
  content: "starring Jimmy Fallon";
  text-transform: none;
  font-size: 16px;
  height: 100%;
  width: 100%;
  position: absolute;
  color: #080e38;
  bottom: -100%;
  opacity: 0;
  transition: all 500ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/** cubic bezier found off of: https://codepen.io/prasanthmj/pen/MmeEyB**/

a#btn_thetonightshow:hover:before {
  bottom: -40px;
  opacity: 1;
}

/******** Nike *********/
a#btn_nike {
  display: inline-block;
  position: relative;
  margin: auto;
  margin-top: 100px;
  color: #000000;
  background-color: #ffffff;
  font-family: "Open Sans", sans-serif;
  font-size: 24px;
  font-weight: 600;
  font-style: italic;
  text-decoration: none;
  transition: all 0.2s;
  padding: 5px 20px;
  border: 2px solid black;
  border-radius: 4px;
}

a#btn_nike:hover {
  color: #ffffff;
  background-color: rgb(78, 78, 78);
  border: 2px solid rgb(78, 78, 78);
}

/******** Missouri Botanical Garden *********/
a#btn_missouribotanicalgarden {
  display: inline-block;
  position: relative;
  margin: auto;
  margin-top: 70px;
  background-color: #ffffff;
  font-family: "Open Sans", sans-serif;
  font-size: 28px;
  font-weight: 600;
  text-transform: uppercase;
  text-decoration: none;
  transition: all 0.2s;
  padding: 10px 0px;
  text-decoration: none;

  /** https://developer.mozilla.org/en-US/docs/Web/CSS/background-clip **/
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
  background-image: linear-gradient(0deg, #45b991, #45b991 50%, #006b36 50%);
  background-size: 100% 200%;
  background-position: 0% 0%;
}

a#btn_missouribotanicalgarden:hover {
  transition: all 0.3s cubic-bezier(0, 0, 0.23, 1);
  background-position: 100% 100%;
}

/******** fitbit *********/
a#btn_fitbit {
  display: inline-block;
  position: relative;
  margin: auto;
  margin-top: 100px;
  color: #002a3a;
  background-color: #ffffff;
  font-family: "Open Sans", sans-serif;
  font-size: 28px;
  text-decoration: none;
  text-transform: lowercase;
  transition: all 0.3s;
}

a#btn_fitbit:hover {
  color: #00b0b9;
  font-weight: 600;
}

a#btn_fitbit {
  overflow: hidden;
}

a#btn_fitbit::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background-color: #00b0b9;
  opacity: 0;
  transition: 0.3s;
}

a#btn_fitbit:after {
  opacity: 1;
  transform: translateX(-100%);
}

a#btn_fitbit:hover::after{
  transform: translateX(0);
}

/******** New Yorker *********/
a#btn_newyorker {
  display: inline-block;
  position: relative;
  overflow: hidden;
  margin: auto;
  margin-top: 100px;
  color: rgb(219, 51, 52);
  background-color: #ffffff;
  font-family: "Open Sans", sans-serif;
  font-size: 20px;
  text-decoration: none;
  text-transform: uppercase;
  transition: all 0.3s;
}

a#btn_newyorker::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background-color: rgb(219, 51, 52);;
  opacity: 0;
  transition: 0.3s;
}

a#btn_newyorker:hover::after{
  opacity: 1;
  width: 100%;
  left: 0;
}

/******** NPR *********/
a#btn_npr {
  display: inline-block;
  position: relative;
  margin: auto;
  margin-top: 100px;
  color: #ffffff;
  background-color: #D62021;
  font-family: "Open Sans", sans-serif;
  font-size: 20px;
  font-weight: 600;
  text-decoration: none;
  text-transform: lowercase;
  transition: all 0.3s;
  padding: 5px 20px;
  border-radius: 4px;
}

a#btn_npr:hover{
  color: #ffffff;
  background-color: #2C63ae;
}

/******** Velocity *********/
a#btn_velocity {
  display: inline-block;
  position: relative;
  margin: auto;
  margin-top: 100px;
  background-color: #ffffff;
  font-family: "Open Sans", sans-serif;
  font-size: 28px;
  font-weight: 600;
  text-decoration: none;
  text-transform: uppercase;
  transition: all 0.3s;

  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
  background-image: linear-gradient(90deg, #212121, #212121 50%, #d14529 50%);
  background-size: 200% 100%;
  background-position: 0% 0%;
}

a#btn_velocity:hover {
  transition: all 0.3s cubic-bezier(0, 0, 0.23, 1);
  background-position: 100% 100%;
}

/******** Instagram *********/
a#btn_instagram {
  display: inline-block;
  position: relative;
  margin: auto;
  margin-top: 100px;
  color: #ffffff;
  background-color: #0095f6;
  border: 2px solid #0095f6;
  font-family: "Open Sans", sans-serif;
  font-size: 18px;
  text-decoration: none;
  transition: all 0.3s;
  padding: 5px 10px;
  border-radius: 8px;;
}

a#btn_instagram:hover{
  color: #0095f6;
  background-color: #ffffff;
}

/******** Facebook *********/
a#btn_facebook{
  display: inline-block;
  position: relative;
  margin: auto;
  margin-top: 100px;
  color: #ffffff;
  background-color: #1877f2;
  font-family: "Open Sans", sans-serif;
  font-size: 24px;
  text-decoration: none;
  padding: 5px 10px;
  border-radius: 2px;
  transition: all 0.2s;
}

a#btn_facebook:hover{
  background-color: #0b52af;
  box-shadow: 0px 0px 6px #000000;
}

/******** Electra Bike *********/
a#btn_electrabike {
  display: inline-block;
  position: relative;
  margin: auto;
  margin-top: 100px;
  color: #ffffff;
  background-color: #1aa7bc;
  font-family: "Open Sans", sans-serif;
  font-weight: 600;
  font-size: 20px;
  text-decoration: none;
  padding: 5px 10px;
  border-radius: 2px;
  transition: all 0.3s;
}

a#btn_electrabike:before {
  content: "";
  display: block;
  width: 0;
  height: 100%;
  z-index: 1;
  position: absolute;
  top: 0;
  right: 100%;
  background-color: #ffcc34;
  transition: all 0.2s;
}

a#btn_electrabike:hover {
  color: #1aa7bc;
}

a#btn_electrabike:hover:before {
  width: 100%;
  height: 100%;
  right: 0;
  top: 0;
}

a#btn_electrabike span {
  position: relative;
  z-index: 2;
}

/******** Old Navy *********/
a#btn_oldnavy {
  display: inline-block;
  position: relative;
  margin: auto;
  margin-top: 100px;
  color: rgb(0, 55, 100);
  background-color: #ffffff;
  font-family: "Open Sans", sans-serif;
  font-size: 28px;
  text-decoration: none;
  transition: all 0.2s;
}

a#btn_oldnavy:hover{
  font-weight: 600;
  text-decoration: underline;
}

/******** Exploding Kitten *********/
a#btn_explodingkitten {
  display: inline-block;
  position: relative;
  margin: auto;
  margin-top: 100px;
  color: rgb(169, 25, 0);
  background-color: #ffffff;
  font-family: "Open Sans", sans-serif;
  font-size: 20px;
  font-weight: 600;
  text-decoration: none;
  text-transform: uppercase;
  padding: 5px 10px;
  border-radius: 2px;
  transition: all 0.3s;
}

a#btn_explodingkitten:before {
  content: "";
  display: block;
  width: 0;
  height: 0;
  z-index: 1;
  position: absolute;
  top: 50%;
  left: 50%;
  border: 2px solid #e07614;
  transition: all 0.1s;
}

a#btn_explodingkitten:hover {
  color: #e07614;
}

a#btn_explodingkitten:hover:before {
  width: 100%;
  height: 100%;
  left: 0;
  top: 0;
}

a#btn_explodingkitten span {
  position: relative;
  z-index: 2;
}

/******** Sardell *********/
a#btn_sardell {
  display: inline-block;
  position: relative;
  overflow: hidden;
  margin: auto;
  margin-top: 100px;
  color: #5f5f5f;
  font-family: "Open Sans", sans-serif;
  font-size: 28px;
  font-weight: 600;
  text-decoration: none;
  text-transform: uppercase;
  transition: all 0.3s;
}

a#btn_sardell:hover {
  color: #f04924;
}

a#btn_sardell::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 3px;
  background-color: #f04924;
  opacity: 0;
  transition: 0.3s;
}

a#btn_sardell:hover::after{
  opacity: 1;
  width: 100%;
  left: 0;
}