stylesheet.css

body {
    background-image: url(https://img.mensxp.com/media/content/2021/Jan/heade_60053c80534d6.jpeg);
    background-size: cover;
    background-position: center;
    background-attachment:fixed;
    line-height:3em;
    overflow-y:scroll;
    padding:0;
    margin:0;
    font-family: 'Montserrat', sans-serif;
}



header {
    margin:2cm;
    background-color:lightslategrey;
    background-blend-mode: lighten;
    background-color:rgba(41, 78, 162, 0.8);
    color:#fff;
    border:1px solid black;
    padding:1cm;
    width:500px;
    font-size:20px;
    animation-name:appear;
    animation-duration: 2s;
    animation-iteration-count: 1;
    
}

.headstart {
    font-size:65px;
    padding-left:2px;
}
.headh1 {
    font-size:36px;
}



@import url("https://fonts.googleapis.com/css?family=Roboto+Mono");
*{box-sizing: border-box; font-weight: normal;}

.flip{position: relative; border:1px solid black;}
.flip > .front,
.flip > .back{
  display: block;
  transition-timing-function: cubic-bezier(0.175, 0.885, 0.32, 1.275);
  transition-delay: 0.5s;
  transition-property: transform, opacity;
}
.flip > .front{transform: rotateY(0deg);}
.flip > .back{
  position: absolute;
  opacity: 0;
  top: 0px;
  left: 0px;
  width: 100%;
  height: 100%;
  transform: rotateY(-180deg);
}
.flip:hover > .front{transform: rotateY(180deg);}
.flip:hover > .back{opacity: 1; transform: rotateY(0deg);}
.flip{
  position: relative;
  display: inline-block;
  margin-right: 20px;
  margin-bottom: 1em;
  width: 400px;
}
.flip > .front,
.flip > .back{
  display: block;
  color: white;
  width: inherit;
  background-size: cover!important;
  background-position: center!important;
  height: 250px;
  padding: 1em 2em;
  background-color:rgba(41, 78, 162, 0.8) ;
  border-radius: 10px;
}
.flip > .front p,
.flip > .back p{
  font-size: 0.9125rem;
  line-height: 160%;
  color: #fff;
}





.fadeIn {
    
    animation-name:appear;
    animation-duration: 2s;
    animation-delay:0.2s;
    animation-iteration-count: 1;
  }
  


  @keyframes appear {
    
    0% {
        opacity: 0;
        transition: 0.25s all ease-in-out;
        transform: translate3d(-50px, 0, 0);
        
    }
    
    100% {
        opacity: 1;
        transform: translate3d(0, 0, 0);
    }
  }


  .card-head {
    font-size:40px;
    color:rgb(0, 0, 0);
    font-weight:600;
  }

  .flip:hover .front {
    opacity:0;
    
}

.front {
    background-color:rgba(0, 0, 0, 0.4);
    background-blend-mode:lighten;
}

.main {
    background-color:rgba(51, 43, 43, 0.8);
    background-attachment:fixed;
    padding:2cm 1cm 2cm 1cm;
    color:white;
    
}

.front, .back {
    padding:0.4cm;
}

.main h1 {
    font-size:40px;
}

.flip:hover {
    cursor:pointer;
}





.wrapper {
  padding:5px;
  max-width: 1200px;
  text-align: center;
  color:#fff;
  margin:auto;
  margin-bottom:1cm;
  
}

.container {
  width: 31%;
  margin: 10px;
  height: 250px;
  border: 3px solid #eee;
  overflow: hidden;
  position: relative;
  float: left;
  display: inline-block;
  cursor: pointer;
}
.child {
  height: 100%;
  width: 100%;
  background-size: cover;
  background-repeat: no-repeat;
  -webkit-transition: all .5s;
  -moz-transition: all .5s;
  -o-transition: all .5s;
  transition: all .5s;
}
.bg-one {
  background-image: url(https://www.mediafire.com/convkey/af7f/s643va8ucpgf6oq6g.jpg);
}
.bg-two {
  background-image: url(https://th.bing.com/th/id/OIP.Nx_SB3NYSbImhBMajQjzngHaEX?pid=ImgDet&w=830&h=490&rs=1);
}
.wrapper span {
  display: none;
  font-size: 24px;
  color: #ffffff !important;
  font-family: sans-serif;
  text-align: center;
  margin: auto;
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  height: 50px;
  cursor: pointer;
  text-decoration: none;
}
.container:hover .child,
.container:focus .child {
  -ms-transform: scale(1.2);
  -moz-transform: scale(1.2);
  -webkit-transform: scale(1.2);
  -o-transform: scale(1.2);
  transform: scale(1.2);
}
.container:hover .child:before,
.container:focus .child:before {
  display: block;
}
.container:hover span,
.container:focus span {
  display: block;
}
.child:before {
  content: "";
  display: none;
  height: 100%;
  width: 100%;
  position: absolute;
  top: 0;
  left: 0;
  background-color: rgba(52, 73, 94, 0.75);
}
@media screen and (max-width: 960px) {
  .container {
    width: 28%;
    margin: 10px 0;
  }
  .wrapper {
    padding: 10px;
  }
}

.contact {
  background-color: rgba(0, 0, 0, 0.4);
  padding:1cm;
  color:#eee;
}


nav li {
	transition:all 1s;
}

nav li:hover {
	color:black;
	border-bottom:#abbcff;
	background-color:#eee;
	border-radius:8px;
	
}



/* https://th.bing.com/th/id/R.3bbebdb38aa03285ddbe67732915f8b5?rik=T4SFQQSmXXxEZQ&riu=http%3a%2f%2fwallpapercave.com%2fwp%2f65thfiw.png&ehk=up0SyQ4BPH6msVBIUjCFPyQ8stUbael%2fN0AgCAL92lM%3d&risl=&pid=ImgRaw&r=0 */



nav {
    height: 62px;
    display: flex;
    align-items: center;
    position: center;
    color: #fff;
    padding: 0 20px;
    width: 100%;
    background-blend-mode:lighten;
    background-color: rgba(11,10, 15, 1);
    position:fixed;
    top:0;
    left:0;
    font-size:20px;
    opacity:1;

}







nav li {
	float:left;	
	padding:0.2cm 0.5cm;
	display: inline-block;
	text-align: center;
	color:#fff;
	text-decoration:none;
}







.header span {
	position:absolute;
	right:100px;
	top:5px;
}


.sidenav {
  height: 100%;
  width: 0;
  position: fixed;
  z-index: 1;
  top: 0;
  right: 0;
  background-blend-mode:lighten;
  background-color:rgba(11, 11, 11, 0.9);
  overflow-x: hidden;
  transition: 0.5s;
  padding-top: 60px;
}

.sidenav a {
  padding: 8px 8px 8px 32px;
  
  	
  text-decoration: none;
  font-size: 20px;
  color: #818181;
  display: block;
  transition: 0.3s;
}

.sidenav a:hover {
  color: #f1f1f1;
}

.sidenav .closebtn {
  position: absolute;
  top: 0;
  right: 25px;
  font-size: 36px;
  margin-left: 50px;
}