main.css

body{
  font-family: "Helvetica Neue";
  margin: 0;
 }

.header{
  background-image: url(img/bg.jpg);
  background-size: cover;
  height: 100vh;
  position: relative;
}

.nav{
  position: fixed;
  width: 100%;
  display: flex;
  justify-content: space-between;
 }

.nav > p{
  color: rgba(255, 255, 255, 0.701961);
  font-weight: bold;
  font-size: 13px;
  padding:15px;
  margin: 0;
}

.nav > div {
  display: flex;
 }

.nav > div > p {
  color: rgba(255, 255, 255, 0.701961);
  font-weight: bold;
  font-size: 13px;
  padding:15px;
  margin: 0;
}

.nav > p:hover{
  color: rgb(255, 255, 255);
  cursor: pointer;
}

.header > hr {
  margin-top: 0;
  padding-top: 50px;
  border-color: rgba(255, 255, 255, 0.3);
}

.container{
  position: absolute;
  width: 1000px;
  height: 372px;
  top: 0;
  bottom: 0;
  right: 0;
  left: 0;
  margin: auto;
}

.container > h1:nth-child(1){
  color: rgb(255,255,255);
  font-size: 65px;
  font-weight: bold;
  text-align: center;
  max-width: 1000px;
  margin: auto;
  
}

.container > hr:nth-child(2){
  color: rgb(240, 95, 64);
  width: 50px;
  border: 0;
  border-top: 1px solid;
  border-width: 3px;
  margin: 30px auto;
}

.container > p:nth-child(3){
  color: rgba(255, 255, 255, 0.701961);
  font-size: 18px;
  font-weight: 300;
  width: 800px;
  margin: auto;
  text-align: center;
  margin-bottom: 50px;
  line-height: 1.5;
}

.container > h1:last-child{
  background-color: rgb(240, 95, 64);
  color: rgb(255, 255, 255);
  width: 120px;
  margin: auto;
  padding: 15px 30px;
  font-size: 14px;
  text-align: center;
  border-radius: 300px;
}

.header > h1:last-child:hover{
  color: white;
  background-color: #ee4b28;
  border-color: #ed431f;
  cursor: pointer;
}

.about{
  padding: 100px 0;
  background-color: #F05F40;
  color: rgb(255, 255, 255);
  margin-top: 0;
}

.about > h1{
  margin-top: 0;
  width: 40%;
  margin: auto;
  font-size: 30px;color: rgb(255,255,255);
  font-weight: 500;
  text-align: center;
  margin-bottom: 10px;
}

.about > hr{
  color: rgb(255,255,255);
  width: 50px;
  border: 0;
  border-top: 1px solid;
  border-width: 3px;
  margin: 20px auto;
}

.about > p{
  width: 40%;
  margin: auto;
  text-align: center;
  color: rgba(255,255,255,0.7);
  font-size: 16px;
  margin-bottom: 20px;
  line-height: 1.5;
}

.about > h1:last-child{
  color: rgb(34, 34, 34);
  font-size: 14px;
  font-weight: bold;
  background-color: rgb(255,255,255);
  width: 101px;
  border-radius: 300px;
  padding: 15px 30px;
}

.about > h1:last-child:hover{
  color: #222;
  background-color: #f2f2f2;
  border-color: #ededed;
  cursor: pointer;
}

.services{
  padding: 100px 0;
  background-color: rgb(255,255,255);
}

.services > h1{
  margin: auto;
  margin-bottom: 10px;
  text-align: center;
  font-size: 30px;
  font-weight: 500;

}

.services > hr{
  color: rgb(240, 95, 64);
  width: 50px;
  border: 0;
  border-top: 1px solid;
  border-width: 3px;
  margin: 20px auto;
}

.box{
  width: 70%;
  margin: auto;
  text-align: center;
}

.services-box{
  width: 20%;
  display: inline-block;
  margin-top: 20px;
  text-align: center;
  padding-left: 20px;
  padding-right: 20px;
}

.services-box > i{
  color: rgb(240,95,64);
  font-size: 56px;
}

.services-box > h3{
  font-size: 24px;
  font-weight: 500;
  margin-top: 20px;
  margin-bottom: 10px;
}

.services-box > p{
  font-size: 16px;
  color: rgb(119, 119, 119);
  line-height: 1.5;
  margin-top: 0;
}

.portfolio {
  font-size: 0;
}

.portfolio > div {
  width: 33.33333%; 
  display: inline-block;
  position: relative;
}

.portfolio > div:hover > div{
  background: rgba(240,95,64,0.9);
  position: absolute;
  width: 100%;
  height:72%;
  opacity: 1;
  font-size: 16px;
  text-align: center;
  padding-top: 100px;
  color: white;
}

.portfolio > div > img{
  z-index: 100;
}



.bg-dark{
  background-color: rgb(34, 34, 34);
  color: rgb(255, 255, 255);
  padding: 50px 0;
}

.bg-dark > h1{
  width: 1140px;
  margin: 0 auto 20px;
  text-align: center;
  font-size: 30px;
  font-weight: 500;
}

.bg-dark > p{
  background-color: rgb(255, 255, 255);
  color: rgb(34, 34, 34);
  width: 126px;
  margin: 0 auto;
  padding: 15px 30px;
  border-radius: 300px;
  font-size: 14px;
  font-weight: bold;
}

.bg-dark > p:hover{
  color: #222;
  background-color: #f2f2f2;
  border-color: #ededed;
  cursor: pointer;
}

footer{
  padding: 100px 0;
}

footer > h1{
  margin: 0 auto 10px;
  text-align: center;
  font-size: 30px;
  font-weight: 500;
}

footer > hr{
  color: rgb(240, 95, 64);
  width: 50px;
  border: 0;
  border-top: 1px solid;
  border-width: 3px;
  margin: 20px auto;
}

footer > p{
  margin: 0 auto 20px;
  text-align: center;
  width: 750px;
  font-size: 16px;
  line-height: 1.5;
}

.icon{
  display: flex;
  width: 55%;
  margin:auto;
  justify-content: space-around;
  text-align: center;
}

.icon-box > i{
  font-size: 55px;
}

.icon-box > p{
  font-size: 16px;
  color: rgb(240, 95, 64);
}

.icon-box > p:hover{
  color: #eb3812;
}