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




#myvideo1 {
  position: fixed;
  right: 0;
  bottom: 0;
  min-width: 100%; 
  min-height: 100%;
}


/* navigation */

.navi{
  width: 100%;
  height: auto;
  z-index: 1000;
}

.navrap{
  width: 100%;
  height: auto;
  margin: auto;
  padding-top: 20px;
}

.logo img{
  height: 50px;
  width: 100%;
  position: fixed;
  z-index: 1000;
}

.brand{
  color: white;
  font-size: 27px;
  text-decoration: none;
  text-transform: uppercase;
  font-family: 'Changa';
  border-radius: 0 5px 5px 0;
  background: linear-gradient(to left, rgba(0, 63, 139, 0.797), black);
  padding: 20px;
  position: fixed;
  z-index: 1000;
}

#sidenav a {
  position: fixed;
  left: -90px;
  transition: 0.3s;
  padding: 15px;
  width: 150px;
  text-decoration: none;
  font-size: 17px;
  color: white;
  border-radius: 0 5px 5px 0;
  margin-top: 220px;
  text-transform: uppercase;
  font-family: 'Coda';
  z-index: 1000;
}
.nav i{
  font-size: 20px;
}
.icon{
  font-size: 20px;
}

#sidenav a:hover {
  left: 0;
}

#home {
  top: 20px;
  background: linear-gradient(to right, black, rgba(0, 63, 139, 0.797));
}

#about{
  top: 90px;
  background: linear-gradient(to right, black, rgba(0, 63, 139, 0.797));
}

#basic {
  top: 160px;
  background: linear-gradient(to right, black, rgba(0, 63, 139, 0.797));
}

#if-else {
  top: 230px;
  background: linear-gradient(to right, black, rgba(0, 63, 139, 0.797));
}

#loop {
  top: 306px;
  background: linear-gradient(to right, black, rgba(0, 63, 139, 0.797));
}
.active{
  text-shadow: 0 0 2px goldenrod, 0 0 10px #e6de00, 0 0 20px #ffab04, 0 0 30px white, 0 0 40px #e68600, 0 0 50px #e66f00, 0 0 60px #e68600;
}



/* middle */


.mid{
  height: auto;
  width: 100%;
  padding-bottom: 70px;
}

.midrap {
  position: relative;
  width: 90%;
  margin: auto;
  border-radius: 20px;
  margin-top: 100px;
  background: radial-gradient( rgb(0, 32, 71), rgba(0, 0, 0, 0));
  border-radius: 50px;
}

.midrap h1{
  text-align: center;
  font-size: 60px;
  color: white;
  position: relative;
  text-transform: uppercase; 
  font-family: 'Prosto One';
  text-shadow: 0 3px rgba(0, 63, 139, 0.797), 0 2px skyblue, 2px 0 black, 2px 0 lightblue;
}

.option {
  position: relative;
  width: 80%;
  margin: auto;
  border-radius: 20px;
  margin-top: 20px;
  padding: 20px;
  border-radius: 15px;
}

.option h2{
  text-align: center;
  font-size: 27px;
  color: rgb(95, 210, 255);
  position: relative;
  font-family: 'Quantico';
  font-weight: bold;
}

.option h4{
  text-align: center;
  font-size: 18px;
  color: white;
  position: relative;
  padding-top: 15px;
  font-family: 'Tomorrow';
}



.midrap1{
  position: relative;
  width: 75%;
  margin: auto;
  margin-top: 70px;
}

.lis{
  position: relative;
  width: 100%;
}
.grp {
  position: relative;
  width: 100%;
}



/* Style the tab */
.tablist {
  float: left;
  position: relative;
  width: 100%;
}

/* Style the buttons inside the tab */
.tablist button {
  display: block;
  background: radial-gradient(rgba(0, 63, 139, 0.797), black);
  color: whitesmoke;
  padding: 12px;
  width: 100%;
  border: 1px solid lightblue;
  border-radius: 15px;
  text-align: center;
  cursor: pointer;
  transition: 0.3s;
  font-size: 18px;
  margin-bottom: 15px;
  font-family: 'Tomorrow';
}

/* Change background color of buttons on hover */
.tablist button:hover {
  background-color: white;
}

/* Style the tab content */
.tabcontent {
  float: left;
  width: 100%;
  padding: 20px;
  border: 4px double lightblue;
  background: linear-gradient(to top, black, rgba(0, 63, 139, 0.741), black);
  border-radius: 15px;
  margin-left: 40px;
  padding-left: 50px;
  padding-right: 50px;
}


.tabcontent h2{
  text-align: center;
  font-size: 27px;
  color: rgb(95, 210, 255);
  text-decoration: underline;
  position: relative;
  font-family: 'Quantico';
  font-weight: bold;
}

.tabcontent h4{
  text-align: center;
  font-size: 18px;
  color: white;
  position: relative;
  padding-top: 15px;
  font-family: 'Tomorrow';
}

.tabcontent p{
  font-size: 17px;
  color: white;
  position: relative;
  padding-top: 15px;
  font-family: 'Tomorrow';
}

.btn-btn-primary{
  padding-top: 10px;
  padding-bottom: 10px;
  padding-left: 20px;
  padding-right: 20px;
  border-radius: 15px;
  font-family: 'Tomorrow';
  position: relative;
  font-weight: bold;
  color: rgb(0, 30, 67);
  border: 2px solid rgb(0, 30, 67);
  background-color: skyblue;
  margin-bottom: 30px;
  margin-top: 10px;
}

.btn-btn-danger{
  margin-left: 20px;
  padding-top: 10px;
  padding-bottom: 10px;
  padding-left: 20px;
  padding-right: 20px;
  border-radius: 15px;
  font-family: 'Tomorrow';
  position: relative;
  font-weight: bold;
  color: white;
  background-color: rgba(0, 0, 0, 0.578);
  border: 2px solid white;
}

.result p{
  text-align: left;
  font-size: 20px;
  color: whitesmoke;
  position: relative;
  font-family: 'Tomorrow';
  text-transform: uppercase;
  font-weight: bold;
  text-shadow: 0 0 1px skyblue, 0 0 1px rgb(81, 209, 252), 0 0 2px rgb(0, 154, 237), 0 0 4px rgb(0, 78, 104), 0 0 5px rgb(0, 49, 75);
}








/* footer */

.foot{
  position: relative;
  width: 100%;
  background-color: black;
  margin: auto;
}

.footrap{
  position: relative;
  width: 90%;
  margin: auto;
  padding-top: 20px;
  border-bottom: 1px solid skyblue;
}
.footrap p{
  font-size: 20px;
  color: rgb(95, 210, 255);
  position: relative;
  font-family: 'Quantico';
  font-weight: bold;
  text-align: right;
}


.footrap i{
  color: white;
  font-size: 18px;
  text-align: right;
  padding: 7px;
  cursor: pointer;
}



.footrap1{
  position: relative;
  width: 90%;
  margin: auto;
}

.fot{
  position: relative;
  width: 100%;
}

.fter img{
  height: 60px;
  width: 100px; 
  margin-left: 30px;

}

.fter{
  position: relative;
  width: 100%;
  background: radial-gradient( rgba(1, 37, 81, 0.782), rgba(0, 0, 0, 0.767), black);
  padding-top: 20px;
  padding-bottom: 20px;
  border-radius: 20px;
  margin-left: 30px;
  margin-bottom: 40px;
}

.fter h2{
  text-align: center;
  font-size: 27px;
  color: rgb(95, 210, 255);
  position: relative;
  font-family: 'Quantico';
  font-weight: bold;
  padding-bottom: 20px;
}

.fter h5{
  text-align: justify;
  font-size: 17px;
  color: white;
  position: relative;
  padding-top: 30px;
  padding-left: 25px;
  padding-right: 25px;
  font-family: 'Tomorrow';
}

.fter p{
  position: relative;
  width: 100%;
  text-align: center;
}
.fter p a{
  text-decoration: none;
  color: white;
  font-size: 17px;
  font-family: 'Tomorrow';
}

.fter p a:hover{
  text-decoration: underline;
}
.footrap2{
  border-top: 1px solid skyblue;
}

.footrap2 p{
  position: relative;
  width: 100%;
  background-color: black;
  text-align: center;
  font-size: 12px;
  color: white;
  padding-top: 20px;
  font-family: 'Prosto One';
}