* {
  margin: 0%;
  padding: 0%;
  font-family: "Times New Roman", Times, serif;
}

body {
  padding: 0px;
  margin: 0px;
  width: 100%;
  background: radial-gradient(#8ca7ff, #406dff);
}

/* Banner details */
.banner {
  width: 100%;

  background-size: cover;
  height: 100%;

  position: center;
  z-index: -1;
}

.banner_Content {
  width: 100%;
  background-image: url(img/index_back.jpg);
  background-size: 100% 100%;
  background-repeat: no-repeat;
  background-attachment: fixed;
  height: 100vh;
  margin-top: 0px;
  padding: 0px;
  position: relative;
  /* transform: translate(0%, 0%); */
}
.banner_Content h1 {
  text-align: center;

  font-size: 52px;
  /* font-weight: bold; */
  transform: translate(2vh, 19vh);
}
.banner_Content h2 {
  text-align: center;
  font-size: 70px;
  transform: translate(3vh, 28.7vh);
}
.banner_Content h4 {
  text-align: center;
  font-size: 70px;
  transform: translate(3vh, 24.7vh);
}
.banner_Content h3 {
  text-align: center;
  font-size: 32px;
  transform: translate(3vh, 34vh);
}

/* wrapper contains main content */
.wrapper {
  display: flex;
  width: 100%;
}

section {
  /* position: center; */
  height: 56vh;
  width: 100px;
  /* position: relative; */
  flex-grow: 1;
}

.chtSheets {
  top: 50%;
  /* transform: translate(0%, 154%); */
  /* margin-top: 2px; */
  position: relative;
  /* transform: translate(-60%,50%); */
  width: 100%;
  height: 125vh;
  background: whitesmoke;
  opacity: 0.69;
  /* top: 50%; */
  /* left: 52%; */
  /* right: 54%; */
  border-radius: 29px;
}
.chtSheets h2 {
  text-align: center;
  /* box-shadow: black 0px 0px 10px; */
}

/* HTML cheat sheet */
.html {
  transform: translate(2vh, 1vh);
  background: black;
  display: inline-block;
  position: relative;
  width: 300px;
  margin-left: 31.5px;
  margin-right: 20px;
  height: 111vh;
}
/* CSS Cheat Sheet */
.css {
  transform: translate(2vh, 1vh);
  background: black;
  display: inline-block;
  position: relative;
  width: 300px;
  /* margin-left: 27px; */
  margin-right: 13px;
  height: 111vh;
}
/* section {
  float: left;
} */
.js {
  transform: translate(2vh, 1vh);
  background: black;
  display: inline-block;
  position: relative;
  width: 300px;
  margin-left: 7px;
  margin-right: 13px;
  height: 111vh;
}
.sect {
  transform: translate(2vh, 1vh);
  background: black;
  display: inline-block;
  position: relative;
  width: 300px;
  margin-left: 7px;
  margin-right: 13px;
  height: 111vh;
}
/* @media (min-width: 300px) {
} */
/* @media screen and (max-width: 500px) {
  .js, .css {width: 100%;}
} */
/* .css h3 {
  text-align: center;
} */

/* flipping sections */

.flip-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  text-align: center;
  transition: transform 2s;
  transform-style: preserve-3d;
}

.flip-card-front h3 {
  transform: translate(0vh, 17.5vh);
  text-align: center;
}

.html:hover .flip-card-inner {
  transform: rotateY(180deg);
}

.css:hover .flip-card-inner {
  transform: rotateY(180deg);
}
.js:hover .flip-card-inner {
  transform: rotateY(180deg);
}
.sect:hover .flip-card-inner {
  transform: rotateY(180deg);
}
@media screen and (min-width: 110vh) {
  .chtSheets {
    height: 125vh;
  }
  .html {
    margin-right: 6vh;
  }
  .css {
    margin-right: 4.5vh;
  }
  .js {
    margin-right: 4.5vh;
  }
}
@media screen and (min-width: 682px) {
  section {
    float: left;
    /* margin-right: 130px; */
    margin-bottom: 3.5vh;
    /* margin-left: -2vh; */
  }
  .html {
    margin-left: 10px;
  }
}
.flip-card-front,
.flip-card-back {
  position: absolute;
  width: 100%;
  height: 111vh;
  -webkit-backface-visibility: hidden; /* Safari */
  backface-visibility: hidden;
}

.flip-card-front {
  background-color: #bbb;
  color: black;
}

.flip-card-back {
  background-color: #8ca7ff;
  /* color: white; */
  transform: rotateY(180deg);
}

/* table */
table {
  color: black;
  border: 2px dotted black;
  width: 100%;
}
tr {
  display: table-row;
  vertical-align: inherit;
  border-color: blue;
}
tr:nth-child(odd) {
  background-color: rgb(0, 209, 209);
}
th {
  display: table-cell;
  vertical-align: inherit;
  font-weight: bold;
}
td {
  text-align: left;
  font-weight: bolder;
  display: table-cell;
  vertical-align: inherit;
}

/* nav bar controls */
nav {
  position: fixed;
  top: 0;
  width: 100%;
  background-color: rgba(0, 22, 88, 0.89);
  font-size: 22px;
  height: 30px;
  text-align: center;
  z-index: 2;
}
nav a {
  box-shadow: black 0px 5px 10px;
  border-bottom-left-radius: 20px;
  border-bottom-right-radius: 20px;
  background-color: #8ca7ff;
  display: inline-block;
  color: black;
  padding-left: 3%;
  padding-right: 3%;
}
nav a:hover {
  color: rgba(0, 22, 88, 0.89);
  background: rgb(0, 255, 255);
  box-shadow: rgb(0, 187, 187) 0px 3px 20px;
}

/* controls highlight */
mark {
  border-top-left-radius: 15px;
  border-top-right-radius: 15px;
  background-color: rgba(0, 215, 215, 0.425);
  /* box-shadow: teal 0px 0px 20px;     */
  /* opacity: 0.9; */
}

/* canvas details */
/* #canvas1 {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(#8ca7ff, #406dff);
} */