style.css

@import url('https://fonts.googleapis.com/css?family=Poppins:400,500,600,700&display=swap');
*{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Poppins', sans-serif;
} 
nav{
  display: flex;
  height: 80px;
  width: 100%;
  background: #1b1b1b;
  align-items: center;
  justify-content: space-between;
  padding-right: 0.5%;
  padding-left: 5%;
  flex-wrap: wrap;
}
nav img{
    height:38px;
    vertical-align: middle;
}
nav .logo{
  color: #fff;
  font-size: 32px;
  font-weight: 600;
  text-shadow: 1.5px 2px #26A69A;
}
nav ul{
  display: flex;
  flex-wrap: wrap;
  list-style: none;
}
nav ul li{
  margin: 0 5px;
}
nav ul li a{
  color: #f2f2f2;
  text-decoration: none;
  font-size: 18px;
  font-weight: 500;
  padding: 8px 15px;
  border-radius: 5px;
  letter-spacing: 1px;
  transition: all 0.3s ease;
}
nav ul li a.active,
nav ul li a:hover{
  color: #111;
  background: #fff;
}
nav .menu-btn i{
  color: #fff;
  font-size: 22px;
  cursor: pointer;
  display: none;
}
input[type="checkbox"]{
  display: none;
}
@media (max-width: 1000px){
  nav{
    padding: 0 30px 0 20px;
  }
}
@media (max-width: 720px) {
  nav .menu-btn i{
    display: block;
  }
  #click:checked ~ .menu-btn i:before{
    content: "\f00d";
  }
  nav ul{
    position: fixed;
    top: 80px;
    left: -100%;
    background: #111;
    height: 100vh;
    width: 100%;
    text-align: center;
    display: block;
    transition: all 0.3s ease;
  }
  #click:checked ~ ul{
    left: 0;
  }
  nav ul li{
    width: 100%;
    margin: 40px 0;
  }
  nav ul li a{
    width: 100%;
    margin-left: -100%;
    display: block;
    font-size: 20px;
    transition: 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  }
  #click:checked ~ ul li a{
    margin-left: 0px;
  }
  nav ul li a.active,
  nav ul li a:hover{
    background: none;
    color: #26A69A;
  }

  .section-header{
    font-size: 12px;
  }

  .section-header .h2-style{
    font-size: 25px;
  }

  .c-inner{
    font-size: 10px;
  }
}

.max-width {
  max-width: 80rem;
  padding: 0 5rem;
  margin: auto;
}

#slider {
  position: relative;
  width: 100%;
  height: 400px;
 
  overflow: hidden;
  box-shadow: 0 0 30px rgba(0, 0, 0, 0.3);
}
#slider ul {
  position: relative;
  list-style: none;
  height: 100%;
  width: 10000%;
  padding: 0;
  margin: 0;
  transition: all 750ms ease;
  left: 0;
}
#slider ul li {
  position: relative;
  height: 100%;
 
  float: left;
}
#slider ul li img{
  width: 1536px;
  height: 400px;
}
 
#slider #prev, #slider #next {
  width: 50px;
  line-height: 50px;
  border-radius: 50%;
  font-size: 2rem;
  text-shadow: 0 0 20px rgba(0, 0, 0, 0.6);
  text-align: center;
  color: white;
  text-decoration: none;
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  transition: all 150ms ease;
}
#slider #prev:hover, #slider #next:hover {
  background-color: rgba(0, 0, 0, 0.5);
  text-shadow: 0;
}
#slider #prev {
  left: 10px;
}
#slider #next {
  right: 10px;
}

.h2-style{
  font-size: 30px;
  font-weight: 600;
  text-shadow: 1px 2px #26A69A;
}


.mask {
	width: 20%;
	position:relative;
	overflow: hidden !important;
  float: left;
	-webkit-box-shadow: 2px 2px 30px 0px rgb(0 0 0 / 20%);
	-moz-box-shadow: 2px 2px 30px 0px rgba(0, 0, 0, 0.2);
	box-shadow: 2px 2px 30px 0px rgb(0 0 0 / 20%);
  margin-left: 4%;
  margin-bottom: 3%;
}
.mask:hover .cover {
	height: 100%;
	top: 0;
	margin-top: -0px;
	background: rgba(0, 0, 0, .8);
	transition: all .4s ease;
	-webkit-transition: all .4s ease;
  
}
.mask:hover .cover p {
	opacity: 1;
	color: #fff;
	text-align: center;
}
.mask:hover .cover p {
	padding-top: 10px;
}
.mask .cover .c-inner {
	display: table-cell;
	vertical-align: middle;
}
.mask .cover h3 {
	font-size: 18px;
	color: #fff;
	line-height: 1em;
	text-align: center;
}
.mask .cover {
	display: table;
	position: absolute;
	z-index: 100;
	width: 100%;
	height: 70px;
	padding: 18px;
	background: #00000091;
	bottom: 0px;
	top: 100%;
	margin-top: -50px;
	transition: all .4s ease;
	-webkit-transition: all .4s ease;
}