style1.css

* {

  margin: 0;
  padding: 0;
  font-family: arial;
  box-sizing: border-box;

}

body {
  background-color: rgb(245, 246, 227);
}

.headline_container {
  display: flex;
  justify-content: center;
  align-items: center;
  padding-top: 5%;
  z-index: 100;
}

h1 {
  text-align: center;
  text-shadow: 2px 2px #190606;
  display: block;
  font-size: 2em;
  /*margin-top: 0.67em;
  margin-left: 24%;
  margin-right: 0;*/
  margin: auto;
  font-weight: bold;
  color: rgb(248, 248, 250);
  font-size: 50px;
  background-color: rgb(130, 27, 142);
  display: inline-flex;
  font-family: "sans-serif";
  padding: 2px 0px;
  border-radius: 15px;
  box-shadow: 0px 10px 10px black;

}

.myVideo {
  display: block;
  position: absolute;
  z-index: -1;
  top: 0;
  left: -150;
  height: 122vh;
  width: 122vw;
}

.red img {
  width: 95px;
  float: left;
  padding-left: 2%;
  padding-top: 1%;
  filter: invert(1);
  position: absolute;
}

.nav_bar {
  padding: 5px 1px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 50px;
}

.nav_bar img {
  width: 95px;
  float: left;
  padding-left: 2%;
  padding-top: 3%;
  filter: invert(1);
}

.login__btn {
  padding: 5px 15px;
  font-size: 20px;
  color: black;
  font-weight: bold;
  border-radius: 15px;
  background-color: rgba(88, 88, 88, 0.7);
  margin-right: 15px;
  text-transform: uppercase;
}

.register__btn {
  padding: 5px 15px;
  font-size: 20px;
  color: black;
  font-weight: bold;
  border-radius: 15px;
  background-color: rgba(88, 88, 88, 0.7);
  text-transform: uppercase;
}

.login__btn:hover {
  padding: 5px 15px;
  font-size: 20px;
  background-color: rgba(45, 45, 45, 0.2);
}

.register__btn:hover {
  padding: 5px 15px;
  font-size: 20px;
  background-color: rgba(45, 45, 45, 0.2);
}

.main__content {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 95vh;
}

.btn {
  padding: 40px;
  font-size: 45px;
  background-color: rgb(130, 27, 142);
  background-image: url("./pictures/test1.gif");
  color: rgb(117, 2, 130);
  text-shadow:2px 2px #fffefe;
  border: 10cm;
  border-color: #0a0a0a;
  border-radius: 50px;
  box-shadow: 0px 5px 10px black;
  text-transform: uppercase;
  cursor: pointer;
  ;
}

.btn:hover {
  background-color: rgb(41, 38, 41);
  transform: scale(1.1);
}

.btn__container {
  width: 1000px;
  display: flex;
  justify-content: space-around;
}

/*learning page*/
.btn__container_learningh {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  row-gap: 40px;
  margin-top: 100px;
  justify-items: center;
  align-items: center;
}

/* number */
.mynumber {
  width: 100%;
  height: 100vh;
  background-image: url("./pictures/number.gif");
  background-size: cover;
  background-position: center;
  position: relative;
  overflow: hidden;

}

.number__content {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 95vh;
}

.number__container {
  width: 1000px;
  display: flex;
  justify-content: space-around;
}

/* learn */

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

.video-c {
  width: 100%;
}

.c-video {
  width: 100%;
  max-width: 800px;
}

/* color */
.mycolor {
  width: 100%;
  height: 100vh;
  background-image: url("./pictures/color.gif");
  background-size: cover;
  background-position: center;
  position: relative;
  overflow: hidden;

}

/* alphabet */
.myalphabet {
  width: 100%;
  height: 100vh;
  background-image: url("./pictures/alphabet.gif");
  background-size: cover;
  background-position: center;
  position: relative;
  overflow: hidden;

}

/*identification */
.myidentify {
  width: 100%;
  height: 100vh;
  background-image: url("./pictures/identify.gif");
  background-size: cover;
  background-position: center;
  position: absolute;
  overflow: hidden;
  z-index: -10;

}

/* game */
.mygame {
  width: 100%;
  height: 100vh;
  background-image: url("./pictures/game.gif");
  background-size: cover;
  background-position: center;
  position: relative;
  overflow: hidden;

}

/*identification */
.mypuzzle {
  width: 100%;
  height: 100vh;
  background-image: url("./pictures/puzzle.gif");
  background-size: cover;
  background-position: center;
  position: relative;
  overflow: hidden;

}

/* Audion Button  */
.audio_button {
  padding: 20px;
  font-size: 25px;
  background-color: rgb(11, 102, 247);
  color: white;
  border: 0cm;
  border-radius: 5px;
  box-shadow: 0px 5px 10px black;
  text-transform: uppercase;
  margin-left: 10%;
}