*{
  margin: 0;
  padding: 0;
}
body{
  background-color: #000;
}

#home {
  position: relative;
}
nav{
    background: #0082e6;
    height: 80px;
    top: 0;
    width: 100%;
    /* position: fixed; */
  }
label.logo{
  color: white;
  font-size: 35px;
  line-height: 80px;
  padding: 0 100px;
  font-weight: bold;
}
nav ul{
float: right;
margin-right: 20px;
}
nav ul li{
  display: inline-block;
  line-height: 80px;
  margin: 0 5px;
}
nav ul li a{
  color: white;
  font-size: 17px;
  text-transform: uppercase;
  padding: 7px 13px;
  border-radius: 5px;
  text-decoration: none;
}
a.active, a:hover{
 background: #1b9bff; 
 transition: .5s;
}
.checkbtn{
  font-size: 30px;
  color: white;
  float: right;
  line-height: 80px;
  margin-right: 40px;
  cursor: pointer;
  display: none;
}
#check{
  display: none;
}

@media (max-width: 952px){
  label.logo{
    font-size: 30px;
    padding-left: 50px;
  }
  nav ul li a{
    font-size: 16px;
  }
}
@media (max-width: 858px){
  nav{
    position: fixed;
    z-index: 100;
  } 
  .checkbtn{
    display: block;
  }
  ul{
    position: fixed;
    height: 100%;
    width: 100%;
    background: #2c3e50;
    top: 80px;
    left: 100%;
    text-align: center;
    transition: all .5s;
  }
  nav ul li{
    display: block;
    margin: 50px;
    line-height: 30px;
  }
  nav ul li a{
    font-size: 20px;
    }
    a:hover, a.active{
      background: none;
      color: #0082e6;
    }
    #check:checked ~ ul{
      left: 0px;
    }
}
section{
  background: url("../images/heart.jpg") no-repeat center center/cover;
  height: 100vh;
  width: 100%;
  align-items: center;
  justify-content: center;
  display: flex;
  /* z-index: -1; */
}
.calculator{
  margin: auto;
  position: absolute;
  width: 40%;
  text-align: center;
  /* border: 2px solid red; */
  background-color: white;
}
.head{
  background-color: rgb(255, 0, 43);
  padding: 10px;
  color: white;
  font-size: 20px;
}
.footer{
  background-color: rgb(250, 239, 209);
  padding: 10px;
  font-size: 20px;
}
.form-container{
  margin: 20px 0;
}
form{
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px 10px;
}
form input{
/* border-radius: 5px; */
box-shadow: inset 0px 0px 3px rgb(255, 0, 0);
border: none;
width: 40%;
padding: 10px 0;
outline: none;
text-align: center;
}
form input:hover,  form input:focus{

  box-shadow: 0px 1px 5px 1px rgb(255, 0, 0);
}
input{
font-size: 18px;
}
.result input{
margin-bottom: 30px;
background: none;
outline: solid rgb(160, 160, 255);
border: none;
width: 50%;
padding: 10px 0;

text-align: center;
}
.btn{
background-color: rgb(25, 165, 25);
width: 30%;
padding: 10px 0;
outline: none;
border: none;
border-radius: 3px;
cursor: pointer;
}
.btn:hover{
box-shadow: 0px 1px 5px 1px black;
}
footer{background-color: black;
color: white;
bottom: 0;
}
footer p {
padding: 5px;
text-align: center;
}
/* calculator */
@media only screen and (max-width: 800px) {

  .calculator{
    width: 90%;
  }
    form{
  display: flex;
  flex-direction: column;
    }
  form input{
width: 70%;
}

}

@media only screen and (max-width: 500px) {
input{
  font-size: 14px;
}
}