* {
  margin: 0;
  padding: 0;
  text-decoration: none;
  list-style-type: none;
  box-sizing: border-box;
}

body {
  height: 120vh;
  width: 100%;
  margin: 0;
  padding: 0;
  background: #333;
  background: url("../images/image.jpg") no-repeat center center/cover;
}

#home {
  display: block;
  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;
}

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) {
  body {

    background: url("../images/image1.jpg") no-repeat center center/cover;
  }
  
  label.logo {
    font-size: 30px;
    padding-left: 50px;
  }

  nav ul li a {
    font-size: 16px;
  }
}

@media (max-width: 858px) {


  nav{
    position: fixed;
  }
  .checkbtn {
    display: block;
  }

  ul {
    position: fixed;
    height: 100vh;
    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: 00px;
  }

}

section {
  margin-top: 80px;
  width: 100%;
  height: 100vh;
  display: flex;
}

.calculator {
  max-width: 95%;
  margin: auto;
  border-bottom-left-radius: 30px;
  border-bottom-right-radius: 30px;
  border-top-left-radius: 10px;
  border-top-right-radius: 10px;
  background-color: #d7faf9;
  padding: 10px 10px 10px 10px;
}

td {
  width: 24%;
  padding: 5px;
}
tr:nth-child(2) td .btn, tr:nth-child(3) td .btn{
  background-color: rgb(1, 252, 252);

}
.btn {
  display: block;
  border-bottom-left-radius: 50%;
  border-bottom-right-radius: 50%;
  border-top-left-radius: 20%;
  border-top-right-radius: 20%;
  margin: 5px;
  width: 90%;
  height: 90%;
  font-size: 1em;
  /* font-weight: 500; */
  outline: none;
  box-sizing: border-box;
  box-shadow: 1px 1px 9px 1px #000000;
  border: none;
  outline: none;
  cursor: pointer;
  transition: 0.2s all;
  padding: 10px 4px;
}

.btn:active {
  box-shadow: 0px 0px 6px 0px #000000;
}

input {
  text-align: right;
  width: 99%;
  height: 100%;
  margin: auto;
  background-color: #bdfbce;
  font-size: 30px;
  padding: 10px 4px;
  box-shadow: inset 0px 0px 12px 0px #555454;
  border-radius: 10px;
  border: none;
  outline: none;
}