* {
    margin: 0;
    padding: 0;
    box-sizing: content-box;
    line-height: 1.6em;
}

a {
    display: inline-block;
    margin: 5px;
    padding: 20px;
    background-color: #dddddd;
    text-decoration: none;
    height: 25px;
}

h1 {
    color: blue;
    text-align: center;
}
p{
    text-align: justify;
    padding-left: 40px;
    padding-right: 50px;
}
li{
    margin-left: 100px;
    padding-left: 10px;
}
h2,h3{
      margin-left: 31px;
}
h2:hover{
    font-size: 30px;
    color: green;
    text-align: center;
}
p:hover{
    margin-top: 0;
    padding-top: 0;
    font-size: 25px;
    background-color: cornsilk;
    color: black;
    line-height: 1.4em;
}
   
li:hover{
    font-size: 20px;
    color: blue;
}
.putcenter{
    text-align: center;
    font-size: 20px;
}
table{
    margin: 0 auto;
    table-layout: fixed ;
    width: 99% ;
    border: #ccc 2px solid;
    border-collapse: collapse;
}
  th,td{
    text-align: center;
    border: #ccc 1px solid;
    border-collapse: collapse; 
}
.center-div{
    text-align: center;
}
.calculator{
    border: #ccc 1px solid;
    margin-left: 50px;
    padding: 10px 40px;
    font-style: italic;
  }
  
.grid{
    display: grid;
    grid-template-columns: 2fr 1fr;
    grid-gap: 5px;
  }
  /* img:hover{
    border: #ccc 5px solid;;
    height: 300px;
    width: 100%;
  } */

  .grid1{
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-gap: 5px;
  }
  .grid1 >div{
    padding: 50px;
  }
  span{
       font-weight: bold;
  }
  .grid3{
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    grid-gap: 5px;
  }